
Vigilance
If a permanent entering causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
Permanents entering don't cause abilities of permanents your opponents control to trigger.
Elesh Norn, Mother of Machines has 13 printings, first in Phyrexia: All Will Be One (2023). EDHREC ranks it #1,051 among Commander cards. It appears most in Atraxa, Grand Unifier decks (6,747 on EDHREC). It has 11 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.