Sceptile

You may sacrifice a creature named Grovyle rather than pay this spells mana cost.
First strike, haste.
Sceptile has flying and flanking as long as the defending player this turn controls a Forest.
{p/g}:Sceptile gets +3/+0 until end of turn. Activate this ability only once each turn.
Fateful hour — As long as you have 5 or less life, Sceptile gets +3/+0 and if the defending player controls a Forest, Sceptile has trample.