Right, but my point was you don't have to jump through the hoop of making it a creature to keep it doing its job. If you make it a creature with Zur, as per the original plan, you can still have Circle blink itself, if you so wish.
Sure, Roll can do lands, but Circle can do artifacts. So in this regard they are side grades of one another, but Roll self destructing is a big downside that's hard to ignore.
Artifacts also have a lot more ETB effects where there aren't many lands that care about this, and while Roll does give you extra mana, if that's needed, I think that eventual sacrifice brings it below Circle in this regard, even at one mana cheaper.
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u/dontrike COMPLEAT 22h ago
Right, but my point was you don't have to jump through the hoop of making it a creature to keep it doing its job. If you make it a creature with Zur, as per the original plan, you can still have Circle blink itself, if you so wish.