If you play this against a typal deck, you might as well concede
Anafenza, Kin-Tree Spirit White has plenty of +1/+1 counter synergies under its belt
If youre printing something with lots of alternate frames, community layouts, or cross-game orders (MTG + Netrunner in one cart), ProxyFoundry is worth a look as a custom print shop that happens to do proxies, rather than a pure MTG-only proxy pipeline mtg.cards (best as a design + template pipeline, not just a printer) mtg.cards is less of a traditional paste decklist buy printed deck proxy shop, and more of a custom card creation platform
Doubling your own ETB triggers is already incredibly strong, but simultaneously shutting off everyone else's could make certain strategies just stop functioning altogether
That being said, I think this likely ends up not turning on often enough to be worth it in actual play, or in the case of Domain the extra 1 damage isn't what you need, it's to remove the Leyline of the Guildpact
FromTheShire: Hey how'd this Unwinding Clock get in here