As for the deck itself, adding cards that reduce the cost of casting spells is always a good idea, and a lot of them like Jaces Sanctum come with an upside that might synergize well with the deck
Lazotep Sliver Lazotep Sliver doesn't make your creatures unblockable, but when each block costs two life and each kill lets you Amass, suddenly it's not such an attractive proposition
Gamble (2020) Gamble got its judge promo in 2020, and its one of the most affordable promos on this list which is surprising for such a popular card in Commander and even Legacy storm
You can tell the difference by the black star and the word promo written on it
Finally, there's Sylvan Scrying , which is decent in Commander but vital in the Modern green Tron deck, seeking out Tron lands for explosive turn-three plays
Whenever another creature dealt damage this turn by a Spider you controlled dies, create a token that's a copy of that creature, except it's a Food artifact with ", , Sacrifice this token: You gain 3 life," and it loses all other card types
