Sacrifice something large to Momentous Fall or Disciple of Griselbrand, put those counters on a card with evasion, and swing away
On the other hand, if you mulligan to Leyline too aggressively, your opponent might just beat you to death with Goyf and Tas while you sit there trying to draw your third land after a mull to 5
Cascade Cascade is probably the spikiest approach you could take to building a chaos deck
While all cards have value, some are worth more than others
Orfeo, the Boulder Rakdos and Bant: Shagrat, Loot Bearer and Galea, Kindler of Hope Gruul and Esper: Meria, Scholar of Antiquity and Arna Kennerd, Skycaptain Selesnya and Grixis: Danitha, New Benalias Light and Tetsuo, Imperial Champion Orzhov and Temur: Ria Ivor, Bane of Bladehold and Pako, Arcane Retriever & Haldan, Avid Arcanist