The burn will be good where it goes
Black Lotus, The Moxen, and Ragavan are prime examples, as they provide an overwhelming resource or tempo advantage from the very first turn
When combat begins, you have to decide which of your attackers are aiming at a player and which are going for the Planeswalker
Hedron Crab A classic staple of Modern mill strategies, Hedron Crab turns every land drop into some milled cards
Skanos, Black Dragon Vassal Legendary Creature Dragon Ranger Menace Whenever Skanos, Black Dragon Vassal attacks, another target attacking creature gains menace and gets +X/+0 until end of turn, where X is Skanos's power
Minwu, White Mage would also be a must: every time you gain life, she puts a +1/+1 on each cleric you control