Very nice.

Death's Approach?

ScryLord, thank you very much for the suggestion. You gave me something to think about in terms of graveyards. I've decided not to go with your suggestion because while using opponents' graveyards against themselves is fun, I'm not sure it is as doable in a mono-blue pioneer deck. Ashiok, Dream Render does go black, but all black mana costs are hybrid so it makes it more doable for Drowned Secrets and keeps the deck mono-blue. That and milling tends to fuel graveyard strategies which involve including, but not limited to, Crucible of Worlds, Delve and Escape.

Your suggestion, was good, just not what I was looking for in this deck. Death's Approach, however, is a card I see working well in Phenax of the Many Mills. Thank you very much for the suggestion and I hope this won't sour you on sharing ideas with me in the future.

Happy Hunting!

I'm not very well versed in Pioneer and haven't played mill in a while, so take what I say with a grain of salt.

First things first, going over 60 cards is almost never a good thing.

About the cards themselves, here's a few things:

• I would suggest Fabled Passage but I'm not entirely sure that would be within you budget. The more fetchlands the better. Ruin Crab is a house.

• I really, really don't like Riddleform. It's very conditional and you kinda don't want to even consider winning with combat damage when playing mill. However, as I did in your other deck, I'll try to suggest things that work with your playstyle, even if I disagree. In this case, I have to say Riptide Chimera is better in every aspect. It's always a creature, has a bigger body and synergizes better with the constellation theme, since you can bounce things to redraw and remill every turn.

• I'm not a huge fan of the cards you added for card draw. I see them as a bit too slow and innefective. From a quick search on Scryfall I have a few cards I believe you should consider. Wizard Class does basically the same as Font of Fortunes, but has better late game potential, especially considering you like having an alternative wincondition. Another thing I'd consider is Hard Cover. I know this seems very suspect, but hear me out. You want cheap enchantments to trigger constelation, which this is. You want card draw to see more cards in your deck, which this does. Additionaly, it increases the toughness of your creatures, enabling better blocks against more aggressive decks. Maybe The Modern Age  ^Flip would be good, as it draws you cards and blinks itself, triggering constellation again. There are also enchantments that mill your opponents as you draw cards, such as Psychic Corrosion, Sphinx's Tutelage and Teferi's Tutelage, though I don't think that's the route you want to take with this deck. I know this paragraph is huge enough already, but I just have one more suggestion that's not already in the deck, which is Inventive Iteration  ^Flip. It's interactions against the opponent and, when it flips, can prevent your opponent from casting certain spells.

• I honestly think you should just max out on Mirrormade given you can use it to copy Drowned Secrets and Fraying Sanity.

• Lastly, because I'm aware I write things almost the size of an article, Into the Story could be something to have in your mind, but not necessarily run.

To reiterate, I don't have a lot of knowledge when it comes to Pioneer, so a lot of the things I've said can be wrong. This is just my opinion based on a little bit of mill I've played on some quick searches on Scryfall. Hope this proves useful to you.

You definitely go all in on your deck suggestions. Not necessarily anything wrong with that.

With 2 spells for each land in my deck I'm reluctant to have more than 4 fetchlands in my deck. Especially if I end up with more fetchlands than Islands to fetch. Though I'm not above replacing a couple of Evolving Wilds with a couple of Fabled Passage.

Remember that I build with what I have. So I wouldn't just put a card like Riddleform in without a reason. Or in this case a bunch of little reasons. It triggers both Drowned Secrets and Sage of Mysteries, turns into a blocker when I counter a spell on an opponent's turn and is a late game mana sink for scry- which helps getting to one of my pieces. It's not a card I want to permanently leave in my deck but it works for now.

I try to keep my decks as close to 60 cards as possible. Though Pshychic Corrosion and Riptide Chimera each invite a different strategy so I'm gonna have to think on them. Thank you for the ideas!

My apologies for not reading and realizing you built this with just the cards you have available.

It's okay. I forgive you.

I chose Psychic Corrosion because it gets around hexproof.

Of the others, Inventive Iteration was the hardest to say no to. The extra enchantment triggers and card draw would be great, but I'm going to go with your idea of maxing out Mirrormade. Since I'll need as many blue spells to cast as possible to trigger Drowned Secrets will require as many blue spells 3 or less I can fit.

Thank you again for all your help!