Swordsoul Strife

When Swordsoul Strife enters the battlefield, you
may exile any number of creatures you control.
Until end of turn, you may may put one Dragon
or Warrior creature from your hand into the
battlefield under your control if its mana value is
less than or equal to the number of creatures
exiled by Swordsoul Strife.
{t}: Target Legendary creature you control gains Trample until end of turn.