Blue Dragon

First Strike, Flying, Age-Up: {1}{u}{u} (add an age
counter as a sorcery), Age 2+: Islandwalk,
Age 3+: Menace, Age 4+: Hexproof
Age (The creature enters the battlefield with 1
age counter. For each age counter, it gets +2/+1
and any benefits noted at specific ages. A creature
can't have more than 4 age counters).
Whenever Blue Dragon has an age counter put
on it, return target non-artifact, non-creature
spell from your graveyard to your hand.