Iku Nagae, Onbashira Maiden

When it enters the battlefield, its power is defined by 7+X where X is the amount of red mana used to cast this creature, while its toughness is defined by 7+X where X is the amount of green mana used to cast it. If you casted it by expending 2 or more blue mana, it becames uncounterable and its ward value equals the amount of blue mana expended. If you casted it by expending 2 or more white mana, it gains lifelink. If you casted it by expending 2 or more black mana, you may kill one opposing creature.