If a platinum arena deck has an air mark, you will see Damselfly, Shard of Freedom, and Wyrm without exception. In fact, it was the millionth time I saw this deck that I decided to come here and see if Shard of Freedom made an appearance on this forum.
Suggested fixes:
-Change the way the math works. .75^(Number of shards) = chance of not-triggering. one shard 25%, two shards 44%, three shards 58%, four shards 68%
-Untargetability AND double damage AND shield evasion is a bit too good, don't you think? How about untargetability and shield evasion only? Untargetability and double damage only? 100% untargetability only? 100% double damage only?
-DON'T allow shard of freedom to stack. Shard of Patience doesn't give +4/+4 each turn if you have two.
Suggested new cards:
-Flying/Air creatures get +1/+0 each turn (<~~Synergizes nicely with Sky Blitz)
-Flying/Air creatures gain (2x Air quanta): Dive
-Flying/Air creatures gain +1/+0 (similar to Nightfall), and cannot be targeted.
-Flying/Air creatures gain +1/+0 (similar to nightfall), and evade shields.