
At the beginning of combat on your turn, put X +1/+1 counters on each creature you control, where X is this creature's power.
"I've found a strange vine in the ice. Thawing for further analysis." —Meltstrider log, final entry
Illustrated by Samuel Perin
Released on August 1, 2025
The value of X is calculated only once, as Ouroboroid’s ability resolves.
If Ouroboroid leaves the battlefield before its ability resolves, use its power as it last existed on the battlefield to determine the value of X.