Weird hypothetical question: imagine a format where, at the start of each game, each player got some number of Voucher tokens with "when you cast a spell, you may sacrifice this token instead of paying one of that spell's additional costs". How many Vouchers do you think each player should get? I'm leaning towards three.
(To give an example of what I'm thinking of, you could cast, say, Into the Roil and sacrifice a Voucher to kick it instead of paying an extra
, or you could cast Threatening Voice and sacrifice a Voucher instead of discarding a card.)
(To give an example of what I'm thinking of, you could cast, say, Into the Roil and sacrifice a Voucher to kick it instead of paying an extra