While a big flyer is always good, the Tyrants power is derived from its mastery of the Wither mechanic
Plus, you don't even need to have a heavy artifact deck, as it makes the treasure to flip itself
Halo Hopper A 3/2 that you can potentially cast for free like Halo Hopper is something, but its a very small something
Ulalek, Fused Atrocity is a 5-color commander that doesnt care which edrazi spell you cast, big or small, as long as you can pay some extra mana to copy it
Bill the Pony Bill the Pony is an unassuming little horse who creates two Food tokens when it enters the battlefield
There was once a deck that played Puresteel Paladin and another similar card (to be seen later on this list) and a bunch of zero-mana equipments like [c]Paradise Mantle[/c] and [c]Kite Shield[/c]