Sword of the Ages [Legends] Rise of the Eldrazi Promos sacrifice Koskun Falls unless you

sacrifice Koskun Falls unless you tap an untapped creature you control

Set: Battlebond Type: Enchantment Rarity: Mythic Cost: {4}{G} If an effect would create one or more tokens under your control

Set: Portal Three Kingdoms Type: Creature — Human Advisor Rarity: Uncommon Cost: {2}{U} When Council of Advisors enters the battlefield

you may cast target instant card from your graveyard without paying its mana cost

centaur druid

Sword of the Ages [Legends] Rise of the Eldrazi Promos sacrifice Koskun Falls unless youSet: Legends Type: Artifact Rarity: Rare Cost: {6} Sword of the Ages enters the battlefield tapped. {T}, Sacrifice Sword of the Ages and any number of creatures you control: Sword of the Ages deals X damage to any target, where X is the total power of the creatures sacrificed this way, then exile Sword of the Ages and those creature cards.