3 Power Spray Ive seen some decks run 4, but I think 3 is the best number so you can use the 4th slot for focusing on consistency
Tawnos's Tinkering doesn't grant haste, so if a noncreature permanent that entered the battlefield since the beginning of your upkeep becomes a creature this way, it can't attack until your next turn
Obviously, thats not going to be an issue if you want to play with the best demons in Commander no matter what, but it is otherwise
The only rules of this contest is that to be considered for an award, a card must have be in the current modified format
Its signpost uncommons (Denethor, Ruling Steward and Shadow Summoning) are both rather solid on rate/function
This activation is stepping up another level from the Collection Quest events that had previously been done at DCA, on the Disney Treasure cruise ship, and at other DLCs