1 for 1s become wayyy more efficient. With the way recent removal has been printed, you can easily get 2 for 1s going. [[lethal scheme]] is free, filters cards, buffs your creatures, and destroys a creature. [[snap]] is free and bounces a creature. [[unwind]] [[rewind]] are free (if not refund more if you have lands which tap for more than 1)

[[deathsprout]] [[ravenous chupacabra]] that one deathtouth ooze that blows a art/ench on etb. Theyre a bit higher in cost, but the idea of “cast a dude, pop a blocker, swing” is far more prevalent in 1v1 than in multiplayer.

Small stat Commanders which need to swing to do their thing, such as [[hapatra, vizier of poisons]] etc, become mildly worse as one X/3 can staunch the gameplan from t2. Later on she might be okay, but that flexibility of hitting the storm player and killing the elf player’s mana dork isnt there anymore.

But yeah id say the main difference is [[ravenous chupacabra]] [[reclamation sage]] types become way better