SCP 682 Hard to Kill Reptile

At the end of each end step, put twice X +1/+1
counters on SCP 682, where X is the amount of
combat damage dealt to SCP 682 this turn.
Remove a +1/+1 counter from SCP 682:
Regenerate SCP 682.
Whenever SCP 682 would be dealt noncombat
damage from any source, prevent that damage.
SCP 682 gains protection from that source's
colors until the start of your next turn. If that
source is colorless, SCP 682 gains protection
from colorless instead.