Consecrated Sphinx <-- Why find their artifacts when you can just dig for yours? Plus Thada is just decent, sure taking that sol ring or sensei's top is always fun but sensei's top tap ability, if I'm correct goes back to their deck so its very susceptible to artifact removal and sol ring is pretty meh
I would personally say Uril, the Mistalker because slamming down a bunch of aura's on him is quite a bit of fune. But from your options, I think I like Mayael alot because its always fun to windmill that 1 fatty you need haha!
Ya, Garruk is very playable in decks other than Mono-Green, also I find garruk and gideon to be very, very strong compared to the others. I think the rest are trash to be honest. Chandra is just bad, jace costs too much, ditto for Sorin.
.... Umm I really do think myrs are kool and all... but you have to understand what is competitive and want isn't, unfortunately myrs aren't competitive no matter how hard you try.. all these myrs aren't really that great.
2x primeval
2x avenger
3x omnath
3x dungrove elder.
4x battlement
4x explore
4x battlement
2x overwhelming stampede.
4x beast within.
3x dismember
4x Garruk (2/2 split).
21x forest
4x verdant
SB:
3x ratchet bombs.
3x baloth
2x batterskull
3x natures claim.
1x spellskite
3x Mental Misstep
This is what I saw.. sorry it aint exact...
2) Gideon Jura
3) Venser, the Sojourner
4) Karn Liberated
5) Koth of the Hammer
HM: Tezzeret, AoB