Magosi, the Waterveil [Zendikar] Giant Wizard but knowledge is a skeleton

but knowledge is a skeleton key

Set: Commander Anthology Type: Artifact — Equipment Rarity: Rare Cost: {4} Living weapon (When this Equipment enters the battlefield

Exile that card

Set: Friday Night Magic 2013 Type: Creature — Devil Rarity: Rare Cost: {B/R} Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it

{3}{U}: Untap Blizzard Elemental

Magosi, the Waterveil [Zendikar] Giant Wizard but knowledge is a skeletonSet: Zendikar Type: Land Rarity: Rare Magosi, the Waterveil enters the battlefield tapped. {T}: Add {U}. {U}, {T}: Put an eon counter on Magosi, the Waterveil. Skip your next turn. {T}, Remove an eon counter from Magosi, the Waterveil and return it to its owner's hand: Take an extra turn after this one.