Line-Seer Mage

{g}{g}{g}{t}, Search your library for a creature
card and put it into play. Lose life equal to half
its mana cost (rounded down).
{r}{r}{t}: Deal 2 damage to a target that did
damage to you so far this game.
{w}, Sacrifice an forest: Untap Line-Seer Mage.
Growth, regrowth or new growth?