Spanish Inquisition is the name of a typically black-based storm deck that uses 0-mana creatures like Memnite and Ornithopter as fodder for Culling the Weak
We have the all-important themed Sol Ring, and Generous Gift sees wide-spread EDH play, but the set lacks chase rares like the Hammer
Cutting to the chase, the card has become popular to play in the terrifying new Simic MTG commander deck, Nadu, Winged Wisdom
Then, they sacrifice the rest of the non-land permanents they control
Dire Flail should see plenty of play for the frontside alone, and if you craft it, it becomes Dire Blunderbuss, an even better equipment
If not, Id consider this cycle of lands a very worthwhile investment for any deck running 3 or more of the appropriate colors