The new Vanish ability states that "when an opponent chooses this character for an action, banish them." This appears to be a negative keyword, although it likely syncs with cards that take advantage of friendly cards being banished
If you use characters like Chernabog to shuffle discarded characters back into your hand, you can create a loop of characters that challenge others before eventually returning to your hand
Until end of turn, you may play those cards without paying their mana costs
Farewell is possibly the best boardwipe in the whole of commander, with its versatility and ability to exile (not destroy, importantly) whatever you need at that moment while protecting the other types you want to keep around
One of the most interesting qualities of Lorcanas gameplay, especially in the late-game stages when players have enough ink to play multiple cards per turn, is its free-for-all nature of sequencing game actions
Sacrifice after III.) I - Gungnir - Destroy target creature an opponent controls.II - Zantetsuken - This creature gains "Whenever this creature deals combat damage to a player, that player loses the game."III - Hall of Sorrow - Draw two cards