Dungeon Master

Level 1
Roll Initiative
At the beginning of your upkeep, roll a d20. On a 20 roll,
search your deck for a planeswalker and put it onto the battlefield.
Level 2 {4}
Level 3 {7}
Legendary Action
At the beginning of your upkeep, cast your commander without paying it's mana cost.
Then, discard cards for each time you have cast your commander.