mtg 0 cost cards Does this reduce spell casting to zero? : r/mtg Evermind | Saviors of Kamigawa
Description
While it sounded cool in theory, it just didn't play all that well

For example, if you control Quantum Riddler and you cast Decode Transmissions while you have no other cards in your hand, Quantum Riddler's replacement effect will apply, and you'll draw three cards instead of two

Card Set(s) -ROYAL BLOOD- [OP-10] CARD VIEW OP10-008 | C | CHARACTER Scotch Attribute Ranged Block icon 3 Effect [Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.) [On Play] If you don't have [Rock], play up to 1 [Rock] from your hand
That is a way to take advantage of symmetrical effects like each player discards a card. Does a Creature Dying Count as Discarding

Run this and then if not needed you can just cycle and move on
