Defying The Warlord's Demands lets you special summon an Ancient Warriors monster, then burns you for 100 Life Points x that monster's Level
Of course this may not make a lot of sense, if you have a host of enchantments on the board, because then it could take you some time to rebuild, and it may just be better to let one of the cards go, but it is a relevant feature
The Mythos seems to take particular pleasure in scuttling perfect Scene of the Crime setups
Admittedly, Ramunap Excavator is much better in Modern where you have access to better fetchlands than Evolving Wilds and utility lands like Ghost Quarter, but maybe there can be some kind of combo-centric self-mill deck that uses my favorite card from the set
If you use the Level 1 Tuner Otoshidamashi and a Level 4 Dinosaur-type Monster with 2,000 attack, then Velphito will have a considerable 3,000 attack and defense points when summoned