You're right, Tetsuko's ability would no longer apply. If something refers to a creature's power or toughness and doesn't specifically say "base power" or "base toughness" then it's talking about the creature's total power/toughness including any modifiers.

ThyArtist1809: An answer to your question has been up for a while. Since there don't seem to be any follow-ups or corrections that need to be made, I marked it as the "Accepted answer" so this topic can move out of the list of unanswered questions. In the future you can take care of this yourself using the "Mark as Answer" button on the response that you feel is the most helpful answer to your question.

Your opponent gets to choose the result, so they will probably choose for you to take damage.

The official current text for Spike Weaver's last ability has been updated to say "Prevent all combat damage that would be dealt this turn" to make it clear that it's a damage prevention effect. If multiple replacement and/or prevention effects are trying to modify how an event affects a player or object, then the affected player or controller of the affected object decides which one to apply first. The unused replacement/prevention effects might still be able to apply to the modified event or they might not. Since your opponent is the one about to be dealt damage, they're the "affected player" in this example.

Grimnix: An answer to your question has been up for a while. Since there don't seem to be any follow-ups or corrections that need to be made, I marked it as the "Accepted answer" so this topic can move out of the list of unanswered questions. In the future you can take care of this yourself using the "Mark as Answer" button on the response that you feel is the most helpful answer to your question.

I try to avoid marking my own responses when I do this, but in this case it was the only option.

Grenade55: An answer to your question has been up for a while. Since there don't seem to be any follow-ups or corrections that need to be made, I marked it as the "Accepted answer" so this topic can move out of the list of unanswered questions. In the future you can take care of this yourself using the "Mark as Answer" button on the response that you feel is the most helpful answer to your question.

Yes, that's the correct interpretation of what the "it's still a land" language will do here. You would have an artifact creature (that isn't a land).

205.1b Some effects change an object’s card type, supertype, or subtype but specify that the object retains a prior card type, supertype, or subtype. In such cases, all the object’s prior card types, supertypes, and subtypes are retained. This rule applies to effects that use the phrase “in addition to its types” or that state that something is “still a [type, supertype, or subtype].” Some effects state that an object becomes an “artifact creature”; these effects also allow the object to retain all of its prior card types and subtypes. Some effects state that an object becomes a “[creature type or types] artifact creature”; these effects also allow the object to retain all of its prior card types and subtypes other than creature types, but replace any existing creature types.

Yes, this works. When you create a copy of an activated ability with Verrak, Illusionist's Bracers or something similar, you aren't "activating" that ability again, just making a copy of it, so any restrictions in the original ability about exactly when or how many times it can be activated won't interfere.

Yes the myriad tokens in the Vihaan-Cybermen example will be created. A resolving spell/ability will do as much as it can and skip any impossible parts. The tokens will be created tapped, since there's no problem with doing that part, they just won't be attacking since they aren't creatures. They will still get exiled at the end of combat so you'll need to get creative if you want to make use of them.

Yes, that's how it will work out. A "dies" trigger is a type of "leave the battlefield" trigger, so since an artifact leaving the battlefield caused Skullclamp to trigger in this example then Gandalf the White will cause it to trigger again.

There are different answers for these situations. For the Anikthea, Hand of Erebos question, the populated token will also be a black 3/3 Enchantment Creature - Zombie copy of Sterling Grove. For the Vihaan, Goldwaker / Cybermen Squadron question, the myriad tokens will be non-creature Treasures.

An object's "copiable characteristics" are its base printed characteristics plus the results of any other copy effects that are currently being applied to it (i.e. copying a Clone pretending to be Runeclaw Bear will make another Bear, not another Clone). For tokens, their "printed" characteristics are the ones they were created with. This means the copiable characteristics of Anikthea's tokens include the 3/3 black zombie creature part, but the copiable characteristics of Vihaan's awakened treasures are just regular treasures.

You still need to pay the kicker if you want to use it and you have to pay the costs for whichever spree modes you choose. A card's "mana cost" is specifically the symbols printed up in the corner. If an effect tells you to cast something "without paying its mana cost", that's the only part you get for free. Anything else, including mandatory additional costs, optional additional costs, cost-increasing effects, etc. has to be paid normally.

Bravet: An answer to your question has been up for a while. Since there don't seem to be any follow-ups or corrections that need to be made, I marked it as the "Accepted answer" so this topic can move out of the list of unanswered questions. In the future you can take care of this yourself using the "Mark as Answer" button on the response that you feel is the most helpful answer to your question.

I try to avoid selecting my own responses when I do this but in this case it was the only option.

No, this doesn't work. Though the player does retain priority to take another action, targets for a triggered ability are chosen at the time it's put onto the stack. You can't back up and re-select targets if someone makes a response.

It's possible to construct a situation where Loaming Shaman can target itself with its own trigger, but it involves the Shaman dying to a state-based-action immediately upon entering the battlefield. This is because triggered abilities are put onto the stack at the time a player gets priority to take another action but SBAs are checked and dealt with right before each time a player would get priority. So it could work in a situation where, for example, the player's opponent had Elesh Norn, Grand Cenobite, or someone had Leyline of Singularity and the player already controlled another Loaming Shaman.

You can use double square brackets around a card's name to create a reference link: Zameck Guildmage, Hardened Scales, Kami of Whispered Hopes. It's the best way to help make sure everyone understands what's going on in the question.

Hardened Scales will just add one more +1/+1 counter in your specific question. The effects from Zameck Guildmage will cause the creature to enter with two additional +1/+1 counters and Hardened Scales will see a creature about to enter the battlefield with one or more counters, so will add another one.

All of the effects here are replacement effects (you can usually tell by the use of one or more of the words "as", "with" or "instead"). Replacement effects replace the usual results of an event with a modified event. If multiple replacement effects could modify how an event affects a player or object, then the affected player or controller of the affected object chooses which one to apply first. The modified event might then become eligible for other replacement effects and/or no longer eligible for others. You keep going until there are no more unused replacement effects that can be applied and then the event happens.

In your example this means at first only the replacement effects created by Zameck Guildmage could apply to the creature entering the battlefield. After you apply one of them, now the other Guildmage effect and the Hardened Scales effect could apply to the modified event. Whichever one of those you apply first, the other can still be applied to the further modified event. After you apply that one there's nothing left to deal with and the creature ends up entering the battlefield with 3 +1/+1 counters. If there were a doubling effect involved here like Doubling Season then the order in which you apply the effects would matter and you'd get the most counters by applying the doubling effect last.

Lord_Olga: Since it's clear you got a satisfactory answer to your question and there don't seem to be any more follow-ups or corrections that need to be made, I marked it as the "Accepted answer" so this topic can move out of the list of unanswered questions. In the future you can take care of this yourself using the "Mark as Answer" button on the response that you feel is the most helpful answer to your question.

When the blocking creatures die you're already well past the point where damage has been assigned and dealt. This means it's too late for the +1/+1 counters from Eternal Thirst to affect the the attacker's power or toughness for determining the effects of damage. The attacker won't deal any extra damage and it will also die if it took lethal damage before the +1/+1 counters went on (i.e. if the attacker is 5/5 and gets blocked by 3 2/2s and there's no first/double strike involved then all the creatures will die together).

It looks like you were able to get the answer to your question in the Rules Q&A area. There are lots of knowledgeable users who pay attention to that part of the site and it usually doesn't take too long for someone to notice a new question and provide a response. It's a great resource for information so I'm glad you found it.