The most impactful rotation will definitely be the Surveil Lands, a cycle of ten dual Lands with basic Land types that enter tapped but let you Surveil on entry
In the Tinker / Welder builds I am very happy to have this as it is serving many more roles than just card quality
Spine of Ish Sah is a bit pricey, but not only does it deal with any problematic permanent you like, but it recycles itself
Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Notes and Rules Information for Kindred Boon: If a creature that isn't of the chosen type somehow gets a divinity counter on it, that creature will have indestructible
On your end step you can create a copy of a token you control, if that token is a Squirrel, you make two of that token instead
As is, I dont see why the price is as high as it is and Id be shocked if this held above $5, never mind $10