The Commander: Szarekh, The Silent King Out of the four face commanders for the Warhammer 40,000 decks, Szarekh, The Silent King is probably the least impressive, at least in isolation
The Gitrog Monster One of the greatest commanders to ever crawl from the swamps of Shadows over Innistrad , The Gitrog Monster combines ramp and card advantage into one potent package
(2024-01-12) Once you've announced that you're applying a card's dredge ability to replace a draw, players can't take any actions until you've put that card into your hand and milled cards
For example, Wrenn and Six is likely the strongest planeswalker in Legacy because of the interaction with Wasteland and the constraints that interaction along with cards like Daze put on the format in terms of casting spells that cost more than two mana
Playing for keeps in a four-player game is probably a bad bet anyhow