Great Oak Guardian
{5}{G}
Creature -- Treefolk
4/5
Flash (You may cast ~this~ any time you could cast an instant.)
Reach
When ~this~ enters, creatures target player controls get +2/+2 until end of turn. Untap them.
Night // Day
{B} // {2}{W}
Instant // Instant
Target creature gets -1/-1 until end of turn.
//
Creatures target player controls get +1/+1 until end of turn.