Corrupting Influence Upgrades

[dapper swallow]

I'm looking for budget upgrades for the Corrupting Influence Precon. I already replaced [[Fumigate]] with [[Skrelv, Defector Mite]]

[opal umbra]

https://scryfall.com/card/kld/15/fumigate

Fumigate <:mana3:292901508771610624><:manaw:1007102126813610074><:manaw:1007102126813610074>

Sorcery
Destroy all creatures. You gain 1 life for each creature destroyed this way.
"Ghirapur's gremlin population poses a threat to the infrastructure of the fairgrounds. Threats must be eliminated." —Sram, senior edificer

https://scryfall.com/card/one/33/skrelv-defector-mite

Skrelv, Defector Mite <:manaw:1007102126813610074>

Legendary Artifact Creature — Phyrexian Mite
Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
Skrelv, Defector Mite can't block.
, : Choose a color. Another target creature you control gains toxic 1 and hexproof from that color until end of turn. It can't be blocked by creatures of that color this turn. ( can be paid with either or 2 life.)
1/1