You can get this card on the board for cheap, ambush one of their best creatures during an attack, and it leaves a good, chunky creature behind when it dies
You want to play a toolbox commander that can fetch up the right answer for any board state
Thassa, Deep-Dwelling Thassa, Deep-Dwelling is one of a number of redundant blink pieces that gives you a free flicker each turn, running up against similar cards like Conjurer's Closet, Teleportation Circle, and Don & Leo, Problem Solvers
We expect all of these cards to be valuable, but since they are polluting the list, we will gather them here together
This means that if you tap four Persistent Petitioners, the target player mills the top twelve cards of their library, not the top forty-eight
Card style rewards