Since its unbanning, new strong equipments (Kaldra Compleat, The Reality Chip, Colossus Hammer) have been printed and have found a home in a very solid Tier 1 deck (Hammer Time) alongside Stoneforge Mystic, without being too powerful for Modern
Once Phyrexian mana brought Mental Misstep, Batterskull, and Dismember, there wasnt much to talk about
If you sink enough mana into its X cost, your opponents will either die or have no resources left to defend themselves, both on the battlefield and in their hand
Needing to tap the land to get counters makes its mana fixing ability slow and makes you give up the mana you would otherwise use the land for, but being able to cash them in for cards later makes this enchantment worthwhile
It didn't financially ruin me as much as I'd anticipated, but I did spend more than I'd like to admit here in writing