All of Bloodstained Mire, Flooded Strand, and Grim Lavamancer are fine cards, but playing them together allows Remie a "free Shock" by turn two, and, in this hypothetical, a clear route to card advantage
Repetition, less so
( Theros Remastered when, Wizards?) Ive added lifegain as a subtheme for the deck, partially to compensate for the white staples Ive left out, but it also clears an extra path to victory and ties into your commander thematically
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Note that the counters on battles are defense counters, not loyalty , but since they work in a similar way to loyalty counters on planeswalkers, the confusion is understandable
That being said, there are a few ways you can slow the deck down for a lower-power table