It's a really clever way to keep the pressure up without overextending
Once both Archeops are knocked out, they no longer have a way to one hit out of nowhere, so we can Penny loop Chi-Yu and play for the deckout or try to take 6 prizes with Heros Caped Radiant Charizard
There is not much that can block a big Deaths Shadow, however, many of the common removal spells of the format can take care of it, until Lurrus Deaths Shadow and the namesake deck are emblematic for how Magic is played today, interrupt your opponent, play a cheap strong threat and counter whatever your opponent tries to play against you
But Karazikar, the Eye Tyrant is a really fun commander for a goad deck
Additional notes: Stoneforge Mystic builds most likely are running Pre-War Formalwear
Masked HERO Dark Law X DARK Level 6 [ WarriorFusionEffect ] ATK 2400 DEF 1800 Must be Special Summoned by "Mask Change"