Prices can tend to be all over the place, so Ill do my best
So with Glistening Oil, you're giving an enemy creature Infect, staying safe from the poison counters yourself, all the while gaining life from having it on the field
If their best card is something incremental and not a one-shot knockout, just take the second and see if you can ride out the first
Maze of Ith is also helpful because you can remove Frodo from combat after attacking
Notice I didnt say deck because with the stupid, stupid, stupid, idiotic stupid poison counter theme in Phyrexia: All Will Be One (PAWBO for short), we have another theme that works hand in hand with it, enables other strategies (Planeswalkers) and is heavily in the best color combination (Simic)
Grab an MTG Marvel Play Booster on Amazon and build the deck yourself