Unseal the Necropolis [March of the Machine] Merfolk Knight Set: March of the Machine:

Set: March of the Machine: The Aftermath Type: Creature — Human Soldier Rarity: Uncommon Cost: {1}{W} Each other Human you control gets +1/+0 and has ward 1

Instant — Adventure

then you may put a permanent card from your hand onto the battlefield

Set: The Lord of the Rings: Tales of Middle-Earth Type: Instant Rarity: Common Cost: {1}{R} Choose one —

This counts as convoke

Unseal the Necropolis [March of the Machine] Merfolk Knight Set: March of the Machine:Set: March of the Machine Type: Instant Rarity: Common Cost: {2}{B} Each player mills three cards. Then you return up to two creature cards from your graveyard to your hand. (To mill three cards, a player puts the top three cards of their library into their graveyard.) On Amonkhet, Phyrexia found a ready made army of horrors waiting for a new master.