Barvatus, The Elder

Flying, Flanking, Vigilance, Hexproof, Shadow, Trample, Haste
If you control all 6 Dragon Spirit's play this card from your hand or library without paying it's mana cost
Barvatus, The Elder has power equal to the number of times a Dragon has been played this game
Barvatus, The Elder may only use Flying plus two other keyword abilities they have in a single turn