Breeding Pool [Zendikar Expeditions] Beatdown When you spend this mana

When you spend this mana to cast a Dragon creature spell

Set: The Dark Type: Creature — Bird Rarity: Uncommon Cost: {G} {G}{G}

Set: Anthologies Type: Creature — Goblin Rarity: Rare Cost: {1}{R}{R} Other Goblins get +1/+1 and have mountainwalk

You will not encounter the second

Reverse Type: Artifact Creature — Construct Whenever you cast a spell that's exactly two colors

Breeding Pool [Zendikar Expeditions] Beatdown When you spend this manaSet: Zendikar Expeditions Type: Land Forest Island Rarity: Mythic ({T}: Add {G} or {U}.) As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.