Inscylla the Inspiring

Vigilance, Flying
At the beginning of your upkeep, each thrall that you control gains vigilance until the end of your turn. You may then tap Inscylla and pay {w}{b}: target creature with resilience less than 2x Inscylla’s power becomes a thrall of Inscylla under your control. The thrall gains vigilance, loses -1/0, and Inscylla gains +1/0.
Whenever Inscylla attacks with her thralls, her thralls gain +1/+2 until the end of the turn, and she gains 0/X until the end of the turn, where X is the number of