Kefnet's Monument [Amonkhet]Set: Amonkhet Type: Legendary Artifact Rarity: Uncommon Cost: {3} Blue creature spells you cast cost {1} less to cast. Whenever you cast a creature spell, target creature an opponent controls doesn't untap during its controller's next untap step. "The worthy shall cultivate a nimble mind to perceive the glorious wonders that await them." Monument inscription

Fire of Kaladesh

shuffle your graveyard into your library

Sacrifice that creature at the beginning of the next end step

{U}{U}: Teferi's Honor Guard phases out

No more shall the righteous cower before evil

Some are filled with water

Set: Guilds of Ravnica Type: Creature — Vampire Rarity: Uncommon Cost: {U}{U}{B}{B} Flying

create a token that's a copy of that card and that's tapped and attacking

Sacrifice Xiahou Dun

fetch more corpses

remove Ydwen Efreet from combat and it can't block this turn

then target opponent destroys four lands they control