Maybe Terra will allow Enigmatic Incarnation to shift some of its maindeck cards towards specific pieces that improve bad matchups, but thats tough to say at the moment
After all, the best way to answer a problematic card is to never let your opponent cast it in the first place
Back when you could post comments on Gatherer, the top comment for years running on this card was, R&D had to be high when they designed this. Emrakul, the Aeons Torn is a flying spaghetti monster that cant be countered and has protection from spells that are more than one color
The Rakdos deck is proving the most popular and while Lord of Pain is pretty forgettable as far as Commanders go, Valgavoth is really quite cool, and pretty fun to boot
It's simply a convenient spot to put your experience counters, which can be represented with dice, glass beads, or other small items
This is actually better in most situations