Vigilant Dragoon, Haschel

Double Strike, Flying
If this creature has no "SP" counter at any time, transform it. During the end step,
lose 1 "SP" counter from this creature.
{u}{r}: This creature gains +1/+1 for each
other dragoon creature, until end of turn.
{2}{u}{r}: Whenever you tap land for mana
add 1 more mana of that color.