Watcher in the trees

Flash, Defender, Haste, Vigilance, Double strike,
Every time a creature an opponent controls
attacks, Deal 5 damage to that creature.
Every time you attack, each opponent loses 2
life, and you gain 2 life.
{t}{g}{g} You gain 5 life. Target
opponent loses 2 life.
{t}{g}{g} if you control a card called
Squirrel city, Rel
put 4 3/3 green squirrel warrior
creature tokens on the battlefield.