Okay so hear me out, #MagicTheGathering crew of #fediverse. Here's a combo for you.

Orc Army attacks with the Trebuchet, triggering the Ballistic Boulder appearing tapped and attacking. Before damage, sacrifice Gollum with Grima. The ring tempts you. Now you can select the Ballistic Boulder as your Ringbearer.

I don't know why, but I feel like it's a flavour win. It's absolutely something the One Ring would do to get back to Sauron!