From Draft to Commander, no matter where a player may look, Foundations cards are bound to crop up
The only caveat I see with Tolarian Academy being the best blue ramp is that, besides being a colorless land, you can add it to any artifact deck as a source of colorless ramp
I had four copies of Etched Champion maindeck for basically all of 2013 simply because of how popular and strong Jund was
You get a counter on it, and you don't have to put in that many flyers in your deck
In addition to the foil treatment inside Box Toppers, the 20 Legends Retold cards have two treatments exclusively within Collector Boosters, foil etched and non-foil
Temur Midrange Landfall | FIN Standard | Travis Hall Creatures (14) 2 Icetill Explorer 4 Overlord of the Hauntwoods 4 Skyserpent Seeker 4 Tannuk, Memorial Ensign Instants (2) 2 Consult the Star Charts Sorceries (10) 2 Doppelgang 4 Ill-Timed Explosion 4 Stock Up Enchantments (6) 3 Dragonback Assault 3 Roaring Furnace // Steaming Sauna Artifacts (2) 2 Ancient Cornucopia Lands (26) 2 Mountain 3 Forest 3 Island 3 Thornspire Verge 3 Willowrush Verge 4 Breeding Pool 4 Fabled Passage 4 Stomping Ground Tannuk feels like a very powerful card that will show up once someone figures out how to crack it