Neo Revelation (2001) included Shining Gyarados and Shining Magikarp, and Neo Destiny (2002) added eight more Shining Pokmon
Plus, even the bad mythics (perhaps outside of Apex of Power) aren't really that bad, with the Elder Dragons being worth a couple of bucks (and being relevant for Commander) and Bone Dragon being a sleeper for post-rotation Standard, assuming that Golgari has some sweet graveyard synergies in Guilds of Ravnica
Feldon of the Third Path Mono-red has come a long way since the early days of Commander, and there are a lot of fantastic creatures that you can put into a Feldon of the Third Path deck
Yes, mentor does stack
Possessing the ability to tap to give a target creature +X/+X until end of turn, where X is equal to the number of elves the user controls, Timberwatch Elf can greatly buff up an Elf at any time, allowing for fun mind games
Basing this on Staggershock , I think sounds reasonable