Originally, enchantments would stick around no matter what until they were removed, similar to artifacts
If that permanents mana value was 3 or less, proliferate
The most common patterns for each are as follows
A Monstrous Rage used on Slickshot Show-Off is one of the scariest things you can see if you don't have removal, and often leads to a game win
This is especially true in Commander, where you only have a one-in-a-hundred chance of drawing the specific card you need each turn
It reads: "[Winter Stockpile] Whenever one of your characters is banished, you may put that card from your discard into your inkwell facedown and exerted." Sitting at around $145.48 on TCGplayer right now, I can only seeing it going up in value over the next few months