If your opponent doesn't have an answer for Bolas pretty soon after he is played, then the game is going to slip from their fingers relatively quickly
Not too bad to make a couple of blockers when you need them
Carnivorous Death-Parrot, Vile Bile, The Fallen Apart, Paper Tiger, Scissors Lizard, Rock Lobster, Double Header These Un-cards are considered mainly for pauper cubes since their power to toughness isnt special in cubes that allow for rares, but four power and a decent toughness for four is actually pretty hard to find outside of a few cards like Rhox Brute, Wildheart Invoker, and Windrider Eel (which is actually a 4/4)
There is a sense of inevitability with mechanics like this, when this type of game introduces a character, a weapon or whatever else and it becomes so popular you must factor it into every decision you make
Among his many accomplishments over a truly amazing career, special mention goes to creating the character of Carnage with writer David Michelinie