Last Updated: 2026-03-30
145.2. The Activated Ability of Units may be executed at any time during the controlling player's Main Phase during an Open State, and not during a Showdown.
145.2.a. This follows the same process as playing a card. See rule 349. Playing Cards for more information.
145.2.a.1. This behaves, once activated, like a spell without an associated card.