mtg wheel cards Magic The Gathering - of Fate (138/351) At the beginning of each opponent’s upkeep Wheel of Sun and Moon

This is just an ordinary creature (although it is a Phyrexian Shark, which rocks) but it has Flying, and its secondary ability is very useful

Flying: When Tiamat enters the battlefield, if you cast it, search your library for up to five Dragon cards not named Tiamat that each have different names, reveal them, put them into your hand, then shuffle.

These can be true doublers like Doubling Season and Branching Evolution or pseudo-doublers like Hardened Scales and Pir, Imaginative Rascal that technically only add an additional counter, but are close enough since counters are often distributed one at a time

A Selesnya 2/2 Human Cleric for three mana, Torens has access to the training ability