Bright Mouse

Hexproof
Defender
On your upkeep, you may put a brightness counter on Bright Mouse.
Whenever Bright Mouse has 4 brightness counters on it, remove all counters from Bright Mouse. It gains +2/+2. Bright Mouse loses defender and hexproof untill end of turn
"The smallest of creatures on the island are usualy the most intriguing."
-Reganthor the exploror