Killer Bee & Gyuki

First Strike, Haste

Tailed Beast Mode —{3}{u}{g}: Monstrosity 5. (If this permanent isn't monstrous, put five +1/+1 counters on it
and it becomes monstrous.)

As long as Killer Bee & Gyuki is monsterous, it has trample.

Tailed Beast Bomb —Exhaust —{x}{u}{r}: Killer Bee & Gyuki deals X damage to each other creature and planeswalker.