Gift of Growth [Mystery Booster] SPA Encargo de la reina Set: Unstable Type: Creature —

Set: Unstable Type: Creature — Goblin Rigger Rare Cost: {3}{R} Other Riggers you control get +1/+0 and have haste

Set: Unstable Type: Creature — Zombie Common Cost: {2}{B} Hoisted Hireling has flying as long as it's being held above the battlefield

Set: Eighth Edition Type: Creature — Specter Uncommon Cost: {2}{B}{B} Flying Whenever Abyssal Specter deals damage to a player

In the Kami War

the Su-Chi were inherently unstable but provided useful knowledge for Tocasia's students

Gift of Growth [Mystery Booster] SPA Encargo de la reina Set: Unstable Type: Creature —Set: Mystery Booster Type: Instant Rarity: Common Cost: {1}{G} Kicker {2} (You may pay an additional {2} as you cast this spell.) Untap target creature. It gets +2 +2 until end of turn. If this spell was kicked, that creature gets +4 +4 until end of turn instead.