Varensha, Goldthorn Captain

Vigilance, haste
Each other Elf creature you control enters the battlefield with an additional +1/+1 counter on it.
Tap ten elves you control: Create Krynnos, the Sun Blessed, a legendary 4/4 red Dragon creature token with flying.
"Not everyone is complacent under the thumb of the Faren, or the Scaled Regent."