Serum Powder [Darksteel] Token Artifact exile it instead of putting

exile it instead of putting it into its owner's graveyard

The goblins tracked the hystrodon with much stealth and cunning

Whenever another creature dies during your turn

Set: Secret Lair Drop Series Type: Artifact — Equipment Rarity: Mythic Cost: {1} Equipped creature gets +3/+3 and has protection from each color that's not in your commander's color identity

Set: Core Set 2019 Type: Creature — Human Wizard Rarity: Common Cost: {1}{U} When Omenspeaker enters the battlefield

Serum Powder [Darksteel] Token Artifact exile it instead of puttingSet: Darksteel Type: Artifact Rarity: Rare Cost: {3} {T}: Add {C}. Any time you could mulligan and Serum Powder is in your hand, you may exile all the cards from your hand, then draw that many cards. (You can do this in addition to taking mulligans.)