A 4-mana 4/3 is passable, and the Treasure upside here is nice
Isshin, Two Heavens as One One of Magic's best extra-combat commanders, Isshin, Two Heavens as One is a natural result of the Cambrian explosion of do this or that effect twice mechanics weve seen cropping up
Youre also likely to draw extra copies of this card in grindy games, so consider finding ways to discard them
Thats all well and good, but its the middle ability that really matters: for three loyalty, you can search your deck for an artifact that costs one or less and put it into your hand
Firebending rewards you for attacking by generating red mana during combat, which means cards like Firebending Student, Fire Nation Cadets, and Boiling Rock Rioter turn every swing into extra fuel for tricks, removal, or activations
2 Muldrotha, The Gravetide One of the best Sacrifice commanders, Muldrotha, The Gravetide lets you recycle the cards you sacrificed right out of the graveyard