japanese mew pokemon card Full Art/Mew 1st Edition (017) 2016 Mythical & Legendary Dream Shine Collection the trusted official grading guarantees its condition Pokemon Card Game/Extra Regulation Box]Mew

My final recommendation is Akki Battle Squad

Bare in mind this is a sliver with older templating, so it affects all slivers, not just your own

We see four major spikes, Ramp at 16, Card Draw at 15, Target Removal at 15 and Graveyard recursion at 11

It's a generically good Voltron piece since Anti-Venom is going to have a ton of Aura and Equipment on it, making With Great Power

Apart from mutate cards to trigger that ability, I guess you could use Stuffy Doll and Brash Taunter, or fill your deck with cards that grant abilities to your commander like backgrounds and the legendary familiars (Kediss, Falthis, et al)