Bituminous Blast [Planechase 2012] SPA Velo del otono you may pay {W} rather

you may pay {W} rather than pay this spell's mana cost

Set: Mirrodin Type: Artifact Rare Cost: {3} Whenever a nontoken creature you control dies

Set: Commander 2013 Type: Sorcery Rare Cost: {3}{R}{R} Choose two — • Incendiary Command deals 4 damage to target player or planeswalker

Set: Mirrodin Type: Artifact Uncommon Cost: {3} At the beginning of your upkeep

Then discard two cards unless you discard an artifact card

Bituminous Blast [Planechase 2012] SPA Velo del otono you may pay {W} ratherSet: Planechase 2012 Type: Instant Uncommon Cost: {3}{B}{R} 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.) Bituminous Blast deals 4 damage to target creature.