The Crystal Dragonet

When The Crystal Dragonet enters the battlefield, put 5 dragonet counters on it. At
the beginning of each upkeep, remove a dragonet counter from it. When all
dragonet counters are removed, The Crystal
Dragonet has flying, hexproof and gets +3/+3.
Each other Forgotten dragon you control has
+3/+3 and hexproof.