Siege wurm
Asked by aros 5 years ago
so i have this card called siege wurm, it cost 2 forests and 5 other mana, i am running a red and blue deck, so it has the convoke thing. if i wanted to use it could i use 2 blue creatures for forest or 2 red creatures for it, or how does that even work if you dont have any forest land cards. thank you for telling me
If a spell just references a creature, it is referring to a creature card on the battle field (or in play already). While being cast it is a creature spell, in other zones it is a creature card.
Convoke let's you use a creature to pay for 1 generic mana of a spells cost, or one colored mana of the creatures color (the color of the creature you are tapping, not the spells color). So you would need 2 forests and/or green creatures in order to cast the wurm. (Or some other way to produce the green mana)
January 19, 2019 12:23 p.m.
Please be sure to mark one of the above answers as accepted so this can be removed from the unanswered queue.
January 25, 2019 12:48 p.m.
As Pieguy396 mentioned, in the future please remember to "Mark as Answer" (there is a button you can click) a post once you no longer have any questions. Doing so helps keep the Rules Q&A section clutter-free and helps future users quickly identify the correct answer.
Since this has been answered for a couple days and you do not appear to have any follow-up questions, I have gone ahead and marked an answer as accepted on your behalf.
Caerwyn says... Accepted answer #1
First, please link your cards using double brackets, like so:
Siege Wurm
This makes it a bit easier to give you an answer as those responding can quickly look at the relevant cards.
Now, on to your question.
Let's start with the rule for Convoke:
Rule 702.50a: Convoke is a static ability that functions while the spell with convoke is on the stack. “Convoke” means “For each colored mana in this spell’s total cost, you may tap an untapped creature of that color you control rather than pay that mana. For each generic mana in this spell’s total cost, you may tap an untapped creature you control rather than pay that mana.”
Breaking that down further, let's define generic mana and colored mana.
Siege Wurm costs
The is what is known as generic mana--this can be mana of any colour, so long as you pay a total of 5 mana.
The is colored mana--you must pay Green mana in order to satisfy that part of the cost.
Now, let's look at three different Blue and Red creatures, and the implications for convoke.
Goblin Guide is mono-Red, and, as such, when using it for Convoke, you can either tap it for or . Storm Crow is mono-Blue, so it can only be tapped for or . Goblin Electromancer is both Blue and Red, so it can be tapped for , , or .
Since none of these creatures are Green, they cannot pay for the in the casting cost of Siege Wurm . As such, you will need to either add Green creatures or add a source of Green mana.
I would like to note, there is a way to cast Siege Wurm without adding any sources of Green mana. Let's look at Slippery Bogle . Because it has a hybrid mana symbol, , it can be cast just using Blue mana sources, but is both Blue and Green. As such, it could be used with Convoke to tap for . Overall, I would probably avoid putting Siege Wurm as a finisher in a Red/Blue deck, but I wanted to let you know that there was a way to do that, if you were so inclined.
January 19, 2019 12:17 p.m.