Emrakul, the Promised End [Eldritch Moon] Azra Assassin you can discard 1 card

you can discard 1 card to add 1 Iron Core of Koa'ki Meiru from your Deck to your hand

and treat it as if it was Special Summoned by the effect of a "Gladiator Beast" monster

at the beginning of each of your upkeeps for the rest of the game

Summoned from the dreamrealms

Begin the hymns

Emrakul, the Promised End [Eldritch Moon] Azra Assassin you can discard 1 cardSet: Eldritch Moon Type: Legendary Creature Eldrazi Rarity: Mythic Cost: {13} This spell costs {1} less to cast for each card type among cards in your graveyard. When you cast this spell, you gain control of target opponent during that player's next turn. After that turn, that player takes an extra turn. Flying, trample, protection from instants An enigma as vexing as life itself.