Revelsong Horn
{2}
Artifact
{1}, {T}, Tap an untapped creature you control: Target creature gets +1/+1 until end of turn.
Selesnya Evangel
{G}{W}
Creature -- Elf Shaman
1/2
{1}, {T}, Tap an untapped creature you control: Create a 1/1 green Saproling creature token.
Unerring Sling
{3}
Artifact
{3}, {T}, Tap an untapped creature you control: ~this~ deals damage equal to the tapped creature's power to target attacking or blocking creature with flying.