The basic complaint is simple
Its very risky since youre giving your opponents more resources, but combining Forced Fruition with Hive Mind and then casting a few cheap spells will have libraries empty in no time
Copy a mutating Gemrazer while it's on the stack, and you'll be destroying three artifacts or enchantments the first time, and two for each mutate after
Plenty of archetypes will enjoy this, from Spellslinger to Artifacts, and from Control to Enchantress
Players enjoyed the opportunity to get multiple rares, having a guaranteed foil slot, having an opportunity to open a card from The List , getting an art card, etc
Also, Lord Skitter is a must-have for the black-red "aristocrats" draft archetype, which is based on not just creature sacrifice, but also mild Rat typal strategies