Rune-Scarred Demon [Mystery Booster] SPA Rompehechizos gruul I don't think you build

I don't think you build one on purpose

Forecast — Tap two untapped white and/or blue creatures you control

Set: Unstable Type: Host Creature — Human Fish Common Cost: {4}{U} When this creature enters the battlefield

Set: Mystery Booster Type: Artifact — Equipment Rarity: Uncommon Cost: {3} Equipped creature gets +3/+0 and has trample and lifelink

then Cerebral Vortex deals damage to that player equal to the number of cards they've drawn this turn

Rune-Scarred Demon [Mystery Booster] SPA Rompehechizos gruul I don't think you buildSet: Mystery Booster Type: Creature Demon Rarity: Rare Cost: {5}{B}{B} Flying When Rune Scarred Demon enters the battlefield, search your library for a card, put it into your hand, then shuffle. The litany of the infernal on his flesh pulses to the beating of his dark heart.