Rule evolution
Rule 118.5a
Previously numbered 116.5a, 117.5a.
Earliest archived Rules release: 2009-10-01 · 0 wording revisions · 2 renumberings
Earliest archived Rules release116.5aDetails
A spell whose mana cost is {0} must still be cast the same way as one with a cost greater than zero; it won't cast itself automatically. The same is true for an activated ability whose cost is {0}.
Renumbered
116.5a→ 117.5aDetailsPreviously
1. Game Concepts
116. CostsThen
1. Game Concepts
117. CostsA spell whose mana cost is {0} must still be cast the same way as one with a cost greater than zero; it won't cast itself automatically. The same is true for an activated ability whose cost is {0}.
Renumbered
117.5a→ 118.5aDetailsPreviously
1. Game Concepts
117. CostsThen
1. Game Concepts
118. CostsA spell whose mana cost is {0} must still be cast the same way as one with a cost greater than zero; it won’t cast itself automatically. The same is true for an activated ability whose cost is {0}.