Polar Reynard

At the beginning of your upkeep, put a season
counter on Polar Reynard. Then, if there are four
or more season counters on it, remove all season counters from Polar Reynard.
As long as Polar Reynard has two or more season counters on it, it gets +1/+1 and has hexproof.
Whenever Polar Reynard deals combat damage to
a creature, tap that creature. It doesn't untap
during its controller's next untap step.