Six is a lot of mana, but honestly, I dont think its crazy at all to consider just playing all four
With a cost of eight, a requirement to exert all cards in the inkwell upon play, and un-inkable status, Mufasa - Ruler of Pride Rock doesn't come cheap
Consuming Tide
Ayli, Eternal Pilgrim helms the church as you delve into a sort of lifegain/aristocrats strategy in a refreshing way
Arclight Phoenix When people see Arclight Phoenix, some might think: Hey, its cute when it goes off, in Magical Christmas Land. In reality, its way easier to bin and bring back multiple Arclight Phoenix in a turn: You just need some cantrips and cards that draw and discard, like Faithless Looting or Chart a Course
However, this isn't particularly accurate as it varies widely