His body is pretty irrelevant as he is almost never involved in combat and he would probably be a better cube card if he were a 0/2 as he is very vulnerable and desirable to kill
The ideal play is to turn the Thopter it creates into a 4/4 for at least one turn, but you can choose other artifacts as well
Events will usually require gems, gold, or tokens to enter, though there are also free events sometimes too
Obviously, there are many top-notch removal spells available to choose from and depending on the colors of your Commander, some cards are off the table for you
Same initial size and cost, of both it and the sac effect
This fixes a lot of the power issues that Infect has, even if it doesnt remove Infect from the Commander format