Sylvana, Druid of Flame

{1}{r}, {t}: Deal 3 damage to target creature or planeswalker.
{1}{g}: Until end of turn, Sylvana, Druid of Flame becomes a 1/1 red and green mouse creature that says 'This creature cannot be blocked' and loses all abilities.
When Sylvana, Druid of Flame enters the battlefield, add {r}{g} in any combination. Use this mana only to cast instants or creature spells.