Caltrops [Urza's Destiny] Unlimited Edition Set: Planechase Type: Enchantment Rarity:

Set: Planechase Type: Enchantment Rarity: Rare Cost: {1}{B}{B}{B} Whenever a creature you control dies

Set: Modern Masters 2015 Type: Legendary Creature — Eldrazi Rarity: Mythic Cost: {11} When you cast this spell

Set: Alpha Edition Type: Artifact Rarity: Rare Cost: {0} {T}: Add {R}

The player sacrifices that creature

Battle doesn't need a purpose

Caltrops [Urza's Destiny] Unlimited Edition Set: Planechase Type: Enchantment Rarity:Set: Urza's Destiny Type: Artifact Rarity: Uncommon Cost: {3} Whenever a creature attacks, Caltrops deals 1 damage to it. Toward the end, Gatha struggled to keep his experiments in and his patrons out.