Prophet of Truth

When Prophet of Truth enters the battlefield,
amass Covenant 2.
At the beginning of your end step and at the beginning of your upkeep, amass Covenant 1.
(To amass Covenant 1, put one +1/+1 counters on
an Army you control. It's also a Covenant. If you
don't control an Army, create a 0/0 blue Covenant
Army creature token first.)