Call to the Netherworld [Time Spiral] SPA Laberinto complejo {U}{B}: Dimir Keyrune becomes a

{U}{B}: Dimir Keyrune becomes a 2/2 blue and black Horror artifact creature until end of turn and can't be blocked this turn

The Cabal breeds many things for the pit fights

Tezzeret Type: Instant Rarity: Common Cost: {1}{W} Target permanent you control gains protection from artifacts or from the color of your choice until end of turn

and the dead

Set: Modern Masters Type: Creature — Giant Shaman Uncommon Cost: {3}{R}{R} When Thundercloud Shaman enters the battlefield

Call to the Netherworld [Time Spiral] SPA Laberinto complejo {U}{B}: Dimir Keyrune becomes aSet: Time Spiral Type: Sorcery Rarity: Common Cost: {B} Return target black creature card from your graveyard to your hand. Madness {0} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.) The ritual was normally performed only by horrors and pit spawn. Lesser mages had but one sanity to crack in the casting.