My play group is calling them Reverse Scars
Because the Scars lands were tapped if you had 2 or more.
It's worth noting that Ulamog exiles 20 upon attack (Like the annihilator trigger). He doesn't need to hit, and he's still indestructible... so no amount of squirrels are going to take him down.
I'm liking what I'm hearing about this set. Maybe I should try and jump back in with this Ally deck you guys were mentioning.