Going into the late game, theres some options to pack a punch, especially if your good equipment pieces are around
Once Isshin is in play, every creature with an attack trigger becomes way more powerful
At the moment, disruptive spells like Thoughtseize and Hymn to Tourach are actually pretty great in Legacy
I love this idea, which feels like a twist and refinement on the Bloomburrow Expend Mechanic (except you've got to pay it all on one spell), and anything that sweetens the pot when it comes to casting big instant and sorcery spells sounds good to me
Hunter's Insight and Harmonize keep the cards flowing so you dont run out of threats
For instance, in an Archimandrite deck you could gain a bunch of life in your upkeep and first main phase to add a big +X/+0 buff to your commander, then use Alteration to turn it into Giggling Skitterspike