Rule evolution
Rule 118.12a
Previously numbered 116.12a, 117.12a.
Earliest archived Rules release: 2009-10-01 · 1 wording revision · 2 renumberings
Earliest archived Rules release116.12aDetails
Some spells, activated abilities, and triggered abilities read, "[Do something] unless you [do something else]." This means the same thing as "You may [do something else]. If you don't, [do something]."
Renumbered
116.12a→ 117.12aDetailsPreviously
1. Game Concepts
116. CostsThen
1. Game Concepts
117. CostsSome spells, activated abilities, and triggered abilities read, "[Do something] unless you [do something else]." This means the same thing as "You may [do something else]. If you don't, [do something]."
Wording changed117.12aDetails
Some spells, activated abilities, and triggered abilities read, "[Do something] unless
you[doa player does something else]." This means the same thing as "You[A player may[do something else]. Ifyou[thatdonplayer doesn't], [do something]."Renumbered
117.12a→ 118.12aDetailsPreviously
1. Game Concepts
117. CostsThen
1. Game Concepts
118. CostsSome spells, activated abilities, and triggered abilities read, “[Do something] unless [a player does something else].” This means the same thing as “[A player may do something else]. If [that player doesn’t], [do something].”