Magic probably may be better off with cards like Trinisphere, Stasis, Blood Moon, and Chalice of the Void relegated to nonrotating formats, yet its interesting that Magic can sneak a potent prison card into Limited without much issue
It won't become a token creature
Shadowspear helps ensure you have consistent access to lifegain and trample for your ring bearer, with the side benefit of letting you remove hexproof and indestructible from opposing threats, and can be searched up with Urzas Saga
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Between the original Ixalan block and The Lost Caverns of Ixalan , or even the original Innistrad block, youll have plenty of ways to do that
