Sentinel of the Nameless City [The Lost Caverns of Ixalan Prerelease Cards] Brainiac create a 5/5 black Demon

create a 5/5 black Demon creature token with flying

then create six 2/2 green Cat Warrior creature tokens with forestwalk

but per our waiver

Set: Commander Legends Type: Artifact Creature — Golem Rarity: Mythic Cost: {9} When Phyrexian Triniform dies

Set: Zendikar Rising Prerelease Promos Type: Creature — Shapeshifter Rogue Rarity: Rare Cost: {2}{U} You may have Glasspool Mimic enter the battlefield as a copy of a creature you control

Sentinel of the Nameless City [The Lost Caverns of Ixalan Prerelease Cards] Brainiac create a 5/5 black DemonSet: The Lost Caverns of Ixalan Prerelease Cards Type: Creature Merfolk Warrior Scout Rarity: Rare Cost: {2}{G} Vigilance Whenever Sentinel of the Nameless City enters the battlefield or attacks, create a Map token. (It's an artifact with "1, T, Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery.") "Halt, traveler. Whatever you seek, you will not find it here."