Garruk's Packleader was already really good. This is just unfair.

Now hits players only. Yes, it's still good, but definitely only in limited.

That's vastly better, though it's worth noting this is still like a pseudo-Electropotence at uncommon (even if it's one that can only dome).

Card changed.

I have trouble imagining a 2/1 Minotaur. Also, it seems weird that both Garruk and Ajani care about creatures (as opposed to the M11 signature cycle which all trigger on very different things).

For that matter, now that I think of it all of your signature cards (other than Jace's) don't actually take much work at all to trigger. You're going to be getting cards into your graveyard, losing life, and playing creatures naturally. Compare this to M11, where Jace's was the only one which happened with any consistency at all (and, note, was the worst of the cycle because of it).

Minotaur was left over from before. Made it an elemental to fit in with the other Garruk stuff, even though I think a 2/1 minotaur would be perfectly fine.

As for the intricate details of the signature cards, they're extremely limiting in what you can design. Personally I think making them easier to trigger isn't a bad thing. What's more important is that the cards are fun to play and the synergy is significant enough (which makes this card a bit iffy, but I was really having trouble with this one).