Biomancer's Familiar [Ravnica Allegiance Prerelease Promos] 081 and the tide of war

and the tide of war changes

Brood Tyrant enters the battlefield or attacks

Set: Trading Card Game Classic Type: Colorless Rarity: Unspecified Retreat cost: Colorless

till all are one

When Cresting Mosasaurus enters the battlefield

Biomancer's Familiar [Ravnica Allegiance Prerelease Promos] 081 and the tide of warSet: Ravnica Allegiance Prerelease Promos Type: Creature Mutant Rarity: Rare Cost: {G}{U} Activated abilities of creatures you control cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana. {T}: The next time target creature adapts this turn, it adapts as though it had no +1 +1 counters on it.