Holy Procession

At the beginning of your upkeep, amass Angels 1.
(Put a +1/+1 counter on an Army you control. It is
also an Angel. If you don't control an Army, create
a 0/0 black Angel Army creature token first.)

At the beginning of your end step, choose one or
more nontoken creatures with a total converted
mana cost less than or equal to the power of target
Army creature token you control. Those creatures
gain indestructible until the end of your next turn.