Sword of Kaldra [Mirrodin] Mole Horror or dealt damage by Rats

or dealt damage by Rats

and you may spend mana as though it were mana of any type to cast that spell

Set: Diamond & Pearl: Secret Wonders Type: Item Rarity: Common

Set: Exodus Type: Creature — Spike Rarity: Uncommon Cost: {1}{B}{B} Spike Cannibal enters the battlefield with a +1/+1 counter on it

Set: Time Spiral Type: Sorcery Rarity: Common Cost: {1}{B}{B} Target player reveals their hand and the top card of their library

Sword of Kaldra [Mirrodin] Mole Horror or dealt damage by RatsSet: Mirrodin Type: Legendary Artifact Equipment Rarity: Rare Cost: {4} Equipped creature gets +5 +5. Whenever equipped creature deals damage to a creature, exile that creature. (Exile it only if it's still on the battlefield.) Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)