Leonis, Demon of the Star

Flying, first strike
{r}{r}{r}: Search your graveyard for Demon Blade
and equip it to Leonis.
{x}{w}{w}: Put X amount of Nature Energy
counters on Leonis where X is the amount of
plains you control. At the beginning of your
upkeep, remove a counter. When all counters
have been removed, transform Leonis.