Kaleb, The Best There Is

Haste, First Strike
When Kaleb, enters deal X damage to target creature

When Kaleb deals combat damage you may
pay {u}, if you do return Kaleb to your hand

At the beggining of combat on your turn you may pay {1}{g}{g}, if you do kaleb deals damage equal to its power to an enemy creature

Kaleb, Power is equal to the amount of damage your spells and permanents have dealt this turn