Kestin, Two-World Outcast

Whenever another Elf or Angel enters the battlefield under your control or another Elf or
Angel under your control dies, put a +1/+1
counter on Kestin, Two-World Outcast.
As long as Kestin, Two-World Outcast has four
or more +1/+1 counters on it, it has flying.
"Why do I feel this obligation to protect those who
despise me? Surely, I should flee while I can. But
could I live with myself afterward?"