Treehugger Dragon

When Treehugger Dragon enters the battlefield,
search your library for a Forest card and put it
onto the battlefield tapped. Then shuffle your
library and gain 3 life.
{x}{g}: If Treehugger Dragon attacked this turn,
search your library for X Forest cards and put
them onto the battlefield tapped as long as X is
less than the damage dealt by Treehugger
Dragon. Then, shuffle your library.