They are: Aeve, Progenitor Ooze Experiment Kraj Felix Five-Boots Mimeoplasm, Revered One Prime Speaker Vannifar Slogurk, the Overslime Slurrk, All-Ingesting The Mimeoplasm Umori, the Collector Vannifar, Evolved Enigma Aside from them, there are other commanders that synergize with oozes and their abilities, including: Atraxa, Praetors' Voice: Proliferate Muldrotha, the Gravetide: Reanimation Adrix and Nev, Twincasters: Token doubling Xavier Sal, Infested Captain: Proliferate and populate Morophon, the Boundless: 5-color shapeshifter commander Yidris, Maelstrom Wielder: Cascade Shalai and Hallar: +1/+1 counters Wrap Up Biogenic Ooze | Illustration by Lake Hurwitz Woof
Source: Bulbapedia
Outside of these upgrades, we get an improved mana base, with channel lands and Mishra's Foundry, and a few sideboard improvements, like Reckoner Bankbuster for more card draw against control and Unlicensed Hearse over Lantern of the Lost for graveyard hate
Note the ability is written in such a way that something like doublestrike would let you get two triggers since it's two instances of combat damage
This shiny and glamorous Pokemon card attracts a hefty amount and whats more is, its pretty rare but not impossible to find