Next, you will want something for transportation
Turns out, when you can consistently make players discard cards and lose life, you have a pattern thats very hard to come back from
What is defined as sliding "on their merry way" is not clearly defined nor what counts as the creature staying on the card
The four cards on offering are: Prosper, Tome-Bound (a Legendary Creature), Xorn (an Elemental Creature), Wild-Magic Sorcerer (an Orc-Shaman Creature) and Grim Hireling (a Tiefling Rogue Creature)
There are nearly 100 cards with the rat creature type, and they all have black in their color identity
Would you be surprised to hear that a 6/6 version of it was banned in Standard, and other formats as well