Mirrorpool [Oath of the Gatewatch Prerelease Promos] Island −1: Put a +1/+1 counter

−1: Put a +1/+1 counter on each creature you control

" —Richard Adams

"On Providence

Return Thawing Glaciers to its owner's hand at the beginning of the next cleanup step

Set: Dissension Type: Legendary Creature — Human Advisor Rarity: Rare Cost: {2}{W}{U} White spells you cast cost {1} less to cast

Mirrorpool [Oath of the Gatewatch Prerelease Promos] Island −1: Put a +1/+1 counterSet: Oath of the Gatewatch Prerelease Promos Type: Land Rarity: Mythic Mirrorpool enters the battlefield tapped. {T}: Add {C}. {2}{C}, {T}, Sacrifice Mirrorpool: Copy target instant or sorcery spell you control. You may choose new targets for the copy. {4}{C}, {T}, Sacrifice Mirrorpool: Create a token that's a copy of target creature you control.