$0.25 @ TCGplayer
This creature enters with four +1/+1 counters on it.
{2}{G}{G}: Put X +1/+1 counters on this creature, where X is its power.
If Heroes' Bane's power is less than 0 when its second ability resolves, X is considered to be 0.
The value of X is calculated only once, as Heroes' Bane's last ability resolves.
