Phyrexian Gremlins [Antiquities] Karn then return it to the

then return it to the battlefield transformed under your control

and library for all cards with the same name as that creature and exile them

Pay 3 life: Regenerate Sentry of the Underworld

Set: Fate Reforged Type: Sorcery Rarity: Mythic Cost: {5}{B}{B} Exile all creature cards from target player's graveyard in a face-down pile

Enchanted creature has protection from red

Phyrexian Gremlins [Antiquities] Karn then return it to theSet: Antiquities Type: Creature Phyrexian Gremlin Rarity: Common Cost: {2}{B} You may choose not to untap Phyrexian Gremlins during your untap step. {T}: Tap target artifact. It doesn't untap during its controller's untap step for as long as Phyrexian Gremlins remains tapped.