If you're totally new to trading card games, this is a seaworthy starting point
To avoid just listing effectively the same combos over and over again, we'll be swapping out combos that are too similar to another with ones that can fit into different colour identities, even if they're not quite as popular
It was amusing to see how ineffective it was against my deck
In Modern though, it interacts beneficially against Urzas Saga and against every creature with ETB effects which includes the newly printed Elementals out of Modern Horizons 2
These creatures get HUGE in Commander games, often with powers of 100 or more
Used correctly and in conjunction with other triggered card effects, however, Elesh Norn, Mother of Machines can make a huge impact as it can cause triggered effects on other cards under the owners control to trigger an additional time