Crackdown Construct

+1: Reveal cards from the top of your library until you reveal an artifact card. Put that card into your hand and the rest on the bottom of your library in a random order. −3: Target opponent loses life equal to the number of artifacts you control. −8: Gain control of all artifacts and creatures target opponent controls.

Choose one — • Destroy target artifact. • Creatures without flying can't block this turn.

+1: Create a colorless artifact token named Etherium Cell with "T, Sacrifice this token: Add one mana of any color." −2: Target creature gets +X/-X until end of turn, where X is the number of artifacts you control. −7: You get an emblem with "At the beginning of combat on your turn, target artifact you control becomes an artifact creature with base power and toughness 5/5."

Trample When this creature enters or dies, for each kind of counter on target permanent or player, give that permanent or player another counter of that kind.

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for 1.) Flying At the beginning of your end step, each opponent discards a card. 1B, Sacrifice an artifact: Target creature gets -2/-2 until end of turn.

Shock deals 2 damage to any target.

4W: Return another target creature you control to its owner's hand.

First strike, menace Whenever Kari Zev attacks, create Ragavan, a legendary 2/1 red Monkey creature token. Ragavan enters tapped and attacking. Exile that token at end of combat.