Orim's Chant (Ext, S) One of the essential elements of a combo deck is a way to get the combo through against countermagic
It can be used alongside equipment, sure, but also in decks that care about activating abilities to put counters on things, for example
Being on The List does not make cards Standard-legal
Pre-release discussions about Bloomburrow have suggested its scale will have mice instead of normal humans as its 1/1 creatures
If it werent, or if they still had the banned as a commander distinction, Im confident this Sultai commander would still be legal, since Narset, Parter of Veils is essentially doing the same thing
This is that with upside of generating surprise blockers to Feral Invocation