Even better are his not one, but two useful attacks, with the second being particularly deadly
You can activate Arcum for Sewer Cam, untap him, Arcum for Repurposing Bay, sac the Cam to get Corridor Monitor, untap Arcum and hold priority to sac the Monitor for Encroaching Mycosynth, and now you can even sac Arcum to himself to get Mind Over Matter, and use Repurposing Bay to get The One Ring, and now you can fire off the MoM + TOR combo you mention
All components can be mixed and matched to create your favorite color combinations
It works nicely with Ashiok, Dream Render and other cards that exile our opponent's cards, like Leyline of the Void
Eevee - 173 - SV: Scarlet & Violet Eevee is one of the most popular Pokmon of all time - and my personal favourite
Multiple-play tactics can be considered kind of a sleazy way to get around the restrictions on certain cards