Zeriah, the Jank-Weaver

Hexproof
Whenever you put one or more +1/+1 counters
on another creature you control, put a +1/+1
counter on Zeriah, the Jank-Weaver.
As long as Zeriah, the Jank-Weaver has 5 or more
+1/+1 counters on it, all creatures you control
gain flying, first strike, and indestructible.