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.
417.4. 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."