Vow of Lightning

(T: Add R.)

4G, Sacrifice a creature: Destroy target creature with flying.

If you control a Forest, rather than pay this spell's mana cost, you may have an opponent gain 3 life. Target creature gets +4/+4 until end of turn.

(T: Add B.)

Destroy target artifact, enchantment, or creature with flying.

Target creature gets +2/+2 until end of turn. If you control an Equipment, create a 1/1 white Human Soldier creature token.

Defender When this creature dies, create a 2/2 red Dragon creature token with flying and "R: This token gets +1/+0 until end of turn."

Whenever a creature you control with flying enters, it gains haste until end of turn. Whenever a Dragon you control enters, it deals X damage to any target, where X is the number of Dragons you control.