The only issue is that you cannot load counters and then sacrifice at the same time, as both require you to tap the land
Its simple, but very powerful
Besides that, your best bet is to prevent the accumulation of the counters in the first place with a Solemnity
I have this card on third place in my own list, as I believe it is just topped by Murktide Regent and another blue card that we will encounter later down the line
If you do, draw X cards, then mill X cards, where X is that creature's power
Sure, its a 3 drop mana rock with Flash that comes in untapped, so its not terrible, but looking at the rest of the ramp package, Id rather have Pillar of Origins that colorfixes me for Faeries or a Thought Vessel which allows me to keep my hand more consistently, especially with the amount of draw present in the deck