Here's how the deck looks with the upgrades added: Also to pre-emptively address some comments: one direction that you can take the upgrades is to really lean into Sliver Gravemother's encore ability and turn the deck into a straight-up Encore deck -- Buried Alive and Entomb cards to put slivers into your graveyard, Convergence of Dominion and Zirda, the Dawnwaker to make encore cost less (though PSA Training Grounds doesn't work, I see people suggesting it but sorry no), Mondrak, Glory Dominus to double the encore tokens, Sundial of the Infinite to keep the encore tokens permanently -- that sounds sweet and all but you'd need to do a massive rework of this entire precon, turning it from a Go Wide Sliver Combat deck to Sliver Reanimator essentially
Its a strong choice for players who enjoy manipulating opponents options and turning their game plan against them
The first is Artazon, which you should play early
As with most X damage spells, this is never going to feel especially efficient, but it does scale as the game goes on, and being able to go after your opponent makes it an effective finisher
No one gets to 30 life in Modern who hasnt already won
Bunnelby #SWSH082 Pokemon Promo Keep track of your collection value over time