Will Terra Tactican

Haste, Trample Whenever Will attacks for the first time each turn, you may sacrifice any number of lands you control. If you do you may cast a creature, instant, or sorcery with mana value equal to the number of sacrificed lands. At the beginning of the end step, if you sacrificed one or more lands this turn create a 4/4 red Mountain Dragon land creature token with flying and haste.