Stifle (Invocation) [Amonkhet Invocations] Champions of Kamigawa Shapeshifter's power is equal to

Shapeshifter's power is equal to the last chosen number and its toughness is equal to 7 minus that number

Ignore this effect for each creature the player didn't control continuously since the beginning of the turn

tap Rohgahh of Kher Keep and all creatures named Kobolds of Kher Keep

Set: Scars of Mirrodin Type: Legendary Artifact Rarity: Mythic Cost: {0} Metalcraft — {T}: Add one mana of any color

then you may put any number of land cards that player owns from exile onto the battlefield under your control

Stifle (Invocation) [Amonkhet Invocations] Champions of Kamigawa Shapeshifter's power is equal toSet: Amonkhet Invocations Type: Instant Rarity: Mythic Cost: {U} Counter target activated or triggered ability. (Mana abilities can't be targeted.)