Each opponent sacrifices an artifact. For each artifact sacrificed this way, you create a Treasure token. Flashback {8}{R}{R}. This spell costs {X} less to cast this way, where X is the greatest mana value of a commander you own on the battlefield or in the command zone. (You may cast this card from your graveyard for its flashback cost. Then exile it.)
Imprint — Whenever a nontoken creature dies, you may exile that card. If you do, return each other card exiled with Mimic Vat to its owner’s graveyard. {3}, {T}: Create a token that’s a copy of a card exiled with Mimic Vat. It gains haste. Exile it at the beginning of the next end step.
Nonartifact spells you cast have improvise. (Your artifacts can help cast those spells. Each artifact you tap after you’re done activating mana abilities pays for {1}.)
Return target nonland permanent with mana value X to its owner’s hand. Draw a card.
Conflagrate deals X damage divided as you choose among any number of targets. Flashback—{R}{R}, Discard X cards. (You may cast this card from your graveyard for its flashback cost. Then exile it.)
Devoid (This card has no color.) Flying At the beginning of your upkeep, sacrifice a creature. Whenever you sacrifice a creature, draw a card. 4/3
Devoid (This card has no color.) When Wasteland Strangler enters, you may put a card an opponent owns from exile into that player’s graveyard. If you do, target creature gets -3/-3 until end of turn. 3/2
When you cast this spell, create a 10/10 colorless Eldrazi creature token. 10/10
Deathtouch As Plague Engineer enters, choose a creature type. Creatures of the chosen type your opponents control get -1/-1. 2/2
When Goblin Matron enters, you may search your library for a Goblin card, reveal that card, put it into your hand, then shuffle. 1/1
Choose two — • Target player gains 7 life. • Put target noncreature permanent on top of its owner’s library. • Target player shuffles their graveyard into their library. • Search your library for a creature card, reveal it, put it into your hand, then shuffle.
Destroy target silver-bordered or acorn permanent in any game you can see from your seat.