Imdeoual, Ithri of Power

Other creatures with power or toughness greater than 7 can't attack or block.
At the beginning of each end step, a creature you control named Ithri Disciple gets base power and toughness 7/7 until Imdeoual, Ithri of Power leaves the battlefield.
{g}: Put up to three -1/-1 counters on target creature.