Kalos is full of colorful characters and none are as suave and brilliant as the professor who might be interested in your Poke-mother, Professor Sycamore
But there were two players at the top both using the same Dimir Excruciator archetype, and each ran three copies of Harvester of Misery
Most likely, Jester's Mask's user will choose a new hand of unneeded lands and/or weak spells for the opponent, which can set them very far behind
This is useful because you know there will be a creature to use the equipment right away, and you can almost think of these equipment cards as creature spells when deck building
When the day comes, I will have an awesome poison article about all the times I tried and failed to get poison back into Magic
I have seen many people try playing this and end up losing the game as they run out of creatures to cast