When you're dealt combat damage, sacrifice Swarmborn Giant.
, Monstrosity 2. (If this creature isn't monstrous, put two +1/+1 counters on it and it becomes monstrous.)
As long as Swarmborn Giant is monstrous, it has reach.
When Eddytrail Hawk enters the battlefield, you get (two energy counters).
Whenever Eddytrail Hawk attacks, you may pay . If you do, another target attacking creature gains flying until end of turn.