Sure, you have to invest some mana and probably wait a turn, but you can make some sweet deals to get rid of problematic permanents
Often times rare cards have standard and holo versions, or only reverse-holo and holo versions
You may choose to turn the empty pile face up, but your opponent will probably choose to give you the empty pile regardless, unless they're feeling especially generous
The question was, black's rituals got moved off to redbut was it something black could do infrequently
It also involves a bit less math, as it just gets three +1/+1 counters per creature you exile, unless you have counter modifiers in play
While progressing through quests, playgroups will face challenging encounters