Counterbalance (Invocation) [Amonkhet Invocations] Gatecrash That land is a Swamp

That land is a Swamp for as long as it has a mire counter on it

Set: Antiquities Type: Creature — Treefolk Rarity: Rare Cost: {1}{G}{G} Gaea's Avenger's power and toughness are each equal to 1 plus the number of artifacts your opponents control

add {C}{C} instead

Set: Fifth Dawn Type: Artifact Rarity: Rare Cost: {3} You may play lands from your graveyard

If the chosen card is cast as a spell

Counterbalance (Invocation) [Amonkhet Invocations] Gatecrash That land is a SwampSet: Amonkhet Invocations Type: Enchantment Rarity: Mythic Cost: {U}{U} Whenever an opponent casts a spell, you may reveal the top card of your library. If you do, counter that spell if it has the same mana value as the revealed card.