Call Forth the Tempest (Borderless) (Surge Foil) [The Lord of the Rings: Tales of Middle-Earth Commander]

Set:	The Lord of the Rings: Tales of Middle-Earth Commander
Type:	Sorcery
Rarity:	Rare
Cost:	{5}{R}{R}{R}

Cascade, cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order. Then do it again.)
Call Forth the Tempest deals damage to each creature your opponents control equal to the total mana value of other spells you've cast this turn.