Every distinct wording since 2010, newest first.
October 13, 2023 · Doctor Who
Bargain is a static ability that functions while the spell with bargain is on the stack. “Bargain” means “As an additional cost to cast this spell, you may sacrifice an artifact, enchantment, or token.” Paying a spell’s bargain cost follows the rules for paying additional costs in rules 601.2b and 601.2f–h.
September 1, 2023 · Wilds of Eldraine
Bargain is a static ability that functions while the spell with bargain is on the stack. “Bargain” means “As you cast this spell, you may sacrifice an artifact, enchantment, or token.” Paying a spell’s bargain cost follows the rules for paying additional costs in rules 601.2b and 601.2f–h.