Trample, Reach

As long as Gamera is fighting or attacking it has Indestructible.

Whenever Gamera attacks you may pay {3}, if you do, put a +1/+1 counter on it if {G} spent this way, a flying counter if {U} was spent, and a first strike counter if {R} was spent.

{2}{R}{R}{R}, Remove X counters from Gamera: It deals damage equal to X twice to target creature an opponent controls. If the targeted creature has toughness 6 or greater and excess damage would be dealt to it, that damage is dealt to that creature's controller.