417.1. Channeling is the action of taking one or more Runes from the top of a player's Rune Deck and putting them on the board.
417.2. The Game Effect that instructs a player to channel 1 or more runes may specify the conditions or circumstances under which those runes enter the board. Example: A spell reads "Channel 1 rune exhausted." As that spell resolves, its controller puts the top rune of their rune deck onto the board and that rune enters the board exhausted rather than ready.
417.3. Channeling is a Limited Action.
417.3.a. Players may only channel runes when Game Effects direct them to do so.
417.4. This action is formatted as "Channel X rune(s)," optionally followed by conditions or stipulations. e.g., "Channel 1 rune." e.g., "When you play me, channel 1 rune exhausted." e.g., "Channel 2 runes exhausted. If you couldn't channel 2 runes this way, draw 1."