Staggershock [Mystery Booster] Nightmare Salamander Beast Set: Ravnica Allegiance Guild Kit

Set: Ravnica Allegiance Guild Kit Type: Creature — Human Cleric Rarity: Uncommon Cost: {1}{W}{B} When Sin Collector enters the battlefield

Set: Scars of Mirrodin Type: Instant Rarity: Common Cost: {3}{G} You gain 1 life for each creature on the battlefield

Set: Fourth Edition Type: Artifact Rarity: Uncommon Cost: {4} {3}

Set: Mystery Booster Type: Creature — Jackal Warrior Rarity: Common Cost: {1}{G} You may exert Bitterblade Warrior as it attacks

and it loses defender

Staggershock [Mystery Booster] Nightmare Salamander Beast Set: Ravnica Allegiance Guild KitSet: Mystery Booster Type: Instant Rarity: Uncommon Cost: {2}{R} Staggershock deals 2 damage to any target. Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)