I highly recommend a search for trending deck lists if youre looking to push this deck to the next level and use it at a locals tournament
In general, the answer is going to depend on how much your card is worth, and whether the value is likely to go up from a good grade
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Lots or scratched and foggyness in the holo might have caused this to net the 7
That single finish would essentially qualify me for a huge run of Pro Tours: Magic Origins , Battle for Zendikar , Oath of the Gatewatch , Shadows over Innistrad , Eldritch Moon , and finally Kaladesh
The life loss for your opponents will be fairly negligible, and every once in a while they'll get an extra ETB out of it, but none of that will compare with you returning your Myr RetrieverMyr Retrievers or The One RingThe One Ring every turn