If it dies, you can transfer the counters around
The deck wants to tap opponents creatures anyway, so adding an additional benefit (and there are fewer benefits better than drawing cards) charges up its power
Eldrazi Incursion and Eldrazi Incursion Collector's Edition 0004_MTGMH3_CmdFace: Ulalek, Fused Atrocity 0005_MTGMH3_CmFeatur: Azlask, the Swelling Scourge 0147_MTGMH3_Vanity: Ulalek, Fused Atrocity 0143_MTGMH3_ComPorEc: Ulalek, Fused Atrocity 0136_MTGMH3_ComPorEc: Azlask, the Swelling Scourge 0151_MTGMH3_EclVanty: Ulalek, Fused Atrocity Check out the cards from Eldrazi Incursion and Eldrazi Incursion Collector's Edition in the Modern Horizons 3 Card Image Gallery
Getting a slowly growing Orc Army is fun, as is ticking it up
Gaining enough life to bring back huge beaters every time with this ability does not seem difficult
The power is definitely there if you can protect it, and Miirym is in the colour of counter magic