The Cavalry Has Arrived

Whenever a creature or enchantment enters the
battlefield under your control this turn, draw a
card.
Flashback {w}{r} Creature two 1/1 green Squirrel creature tokens.
BackBack {w}{r}{g}Create three 1/1 red and white Soldier creature tokens with haste.
(You may cast this card from your exile zone for its backback cost. Then put it into your sideboard.)