Milling to the battlefield is solid, and it's nice that it doesn't have to be one of the milled cards
In a deck full of small creatures and control elements, its not hard for this cutey to be a two mana 5/5+ reminiscent of the once-100 card Tarmogoyf
As a smoothing mechanic, this has been the most revisited typecycling variant, albeit after a long hiatus: Alara Reborn , which printed the first cards with two landcycling abilities, then a decade passed before March of the Machine , The Lord of the Rings: Tales of Middle-earth , The Lost Caverns of Ixalan , and Duskmourn: House of Horror , which all had a cycle of commons with appropriately colored landcycling
they can be parlayed into gain
You do not choose as the ability goes on the stack