Battleground of the Gods

Titanfall — Whenever a creature or vehicle with
base power 5 or greater enters the battlefield
under your control, add a charge counter to Battleground of the Gods.
At the beginning of your upkeep, put X +1/+1 counters on each creature you control. Where X
is equal to the number of charge counters on Battleground of the Gods.
For glory and for honor, We stand.