The idea is weaponizing card draw as damage, turning your normal value engine into the centerpiece of your win condition
There are a surprisingly large number of popular cards that still work perfectly fine while its on the battlefield
We have Ancient Den and Great Furnace as artifact lands that cost a pretty penny, plus some fairly cheap but broadly useful cards like Laelia, the Blade Reforged, Daretti, Scrap Savant, Darksteel Mutation, and Boros Charm
Thassa, Deep-Dwelling Thassa, Deep-Dwelling is one of a number of redundant blink pieces that gives you a free flicker each turn, running up against similar cards like Conjurer's Closet, Teleportation Circle, and Don & Leo, Problem Solvers
You can't make many planeswalkers into it, a lot of removal is weak against it