The goal is to quickly start attacking with Knights to trigger the looting ability of Sidar Jabari of Zhalfir, discard cards we don't need or expensive Knights to reanimate later with Sidar, and keep developing our board with Knights until we eventually can start swinging for lethal with the aid of cards like Knights' Charge
Test of Endurance Test of Endurance is the best way to win the game with a lifegain deck, hands down
A 5-cost 6/5 with haste and trample is already a solid body, being able to get onto the field, ignore chump blockers, and do damage immediately
Instead of sacrificing Stasis, drawing a card, and passing the turn, you can: sacrifice Stasis, draw a card, and tap Time Vault, taking a turn unaffected by Stasis, while you opponent remains tapped out
Five of the six also cleanly mapped to MTGs five-colour Mana system, Jarvis said
Tazri comes from Oath of the Gatewatch, too, which is a pre-Booster Fun set