Potato Land

{t} {x} mana where {x} is your choice
When Potato Land enters the battlefield, all cards you control gain trample, flying, deathtouch, vigilance, first strike, double strike, flash, menace, haste, hexproof, indestructible & lifelink until end of game
When Potato Land enters the battlefield, all creatures you control gain +X/+X where X is your choice