Serahane, Hallar's Familiar

Spend only mana produced by creatures to cast
this spell.
Menace, Reach
Whenever Serahane, Hallar's Familiar attacks,
you may have it deal 1 damage to target creature
with flying. If you control five or more Elves,
Serahane, Hallar's Familiar deals 4 damage to
that creature instead.