Devil of Unholy Geometry

At the beginning of your upkeep, put pi/2 ratio counters on Devil of Unholy Geometry.
Devil of Unholy Geometry's power is equal to
cos(X)+2, and its toughness is equal to sin(X)+2,
where X is the number of ratio counters on it.
(Its P/T starts at 3/2, then changes to 2/3 -> 1/2 ->
2/1, then repeats. Unless you use an effect to change
the number of counters on it. Don't do that.)