Tera, Dragon Tamer

{t}: Add {r} for each dragon you control
{t}{x}: Lose X life and give all dragons +X/+X
and Vigilance
{t}{r}{b}: Create a 0/1 Soldier with "Sacrifice this creature: Give target dragon
+2/+1 until end of turn
"They said dragons could not be tamed"
They were wrong."
-Tera, Dragon Tamer