What you might not realize with this one is that it lets you put any number of land cards an opponent owns in exile into play with its trigger
And if youre running Teshar, Ancestor's Apostle as your historic commander then youre already in this territory anyway
Borderless Skullclamp Borderless cards are sometimes just, like, sorta, maybe, I guess better
For example, amethyst glimmers like Elsa Snow Queen use magic to keep their options open, while powerful steel glimmers like Captain Hook Forceful Duelist are strong and tough
and Heir of Falkenrath are options in black
Add in discard outlets like big creatures with Cycling (which you can grab back), Golbez, Crystal Collector's own Surveil ability, and old classics like Bottomless Pit, and we've got a nasty little engine here