Baloth Cage Trap
Instant — Trap
If an opponent had an artifact enter the battlefield under their control this turn, you may pay 
rather than pay this spell's mana cost.
Create a 4/4 green Beast creature token.
Illustrated by
Modern Masters 2017#120UncommonEnglishLegality
Rulings
Oct 1, 2009
You may ignore a Trap’s alternative cost condition and simply cast it for its normal mana cost. This is true even if its alternative cost condition has been met.
Oct 1, 2009
Casting a Trap by paying its alternative cost doesn’t change its mana cost or converted mana cost. The only difference is the cost you actually pay.
Oct 1, 2009
Effects that increase or reduce the cost to cast a Trap will apply to whichever cost you chose to pay.