I could maybe see this getting some use in the Sapphire/Amethyst control decks that already use cards like Hades - Infernal Schemer to throw cards into your opponents inkwell where theyre less of a threat, but really this is a way to trigger the likes of Boo
Helm of the Ghastlord is an uncommon with a single print in an old set ( Shadowmoor in this case), and the high prices have held even when the enchantment has synergy with a just one Final Fantasy commander
Sin enters with X +1/+1 counters on it, where X is twice the number of counters removed this way
The Jumpstart format is the fastest way to build a deck and get playing
Most of the time, we dont care about 2-drop walls that do nothing but block, but it feels free when you get a card out of the deal, and it can also synergize with anything that might let you reuse the ability
Then they remain until used so that's brilliant at protecting now in response and then in the future