what mtg cards are standard Procedure · Unfinity (UNF) #287 · Scryfall Magic: The Gathering Search Legal in Standard, Rules Text:

Against control you can make this and they have to kill it right away, if they don't you get to make an army for free while you sculpt your hand without extending at all until they find a wrath or die

Considering his second ability makes all your creatures unable to be blocked, any cards that grant you monarch become potentially game-enders when you have a big board

If it still does enough for two mana then sure, why not

The following is what I would cut: Narci, Fable Singer Mesa Enchantress Verduran Enchantress Kodamas Reach Farseek Rampant Growth Arcane Signet Cunning Rhetoric Love Song of Night and Day Omen of the Sun I know, I know what a betrayal