This can +2 to draw a card and scry two which is nice card flow, and then -3 to exile the top card of your library and then make a number of 1/1 flyers equal to the mana value, which is also very strong in Type Four with its elevated casting costs and low land count
This isnt a combination of colors that sees a lot of play in EDH
The fact that the second card is so loosely restricted, and Force is so universal (and technically hard-castable) makes it playable in any fair blue deck, and so gives a large portion of the format the necessary panic button to discourage super-aggressive combo
As a commander, Tamiyo, Inquisitive Student is fine for generating some extra artifact tokens, and if you build around Clue tokens youll have a good amount of them to work with
Fact or Fiction
This Plains is actually part of a diptych, a single painting combined with the Forest he did for Lorwyn, and that was later cropped down to become two separate cards