Hostile (This creature enters the battlefield or transforms under an opponent's control.)

At the beginning of your upkeep and end step, create a 1/1 Clerk, then put a +1+1 counter and a blessing counter on target creature you control without a blessing counter. Then, if you control twelve or more creatures with a blessing counter, breach Plague Doctor.

Hostile, Defender, Hexproof

When WhiteNight breaches, exile all creatures with blessing counters and create 11 3/3 Apostle creature tokens.

Any number of players may sacrifice a total of 12 permanents to exile all Apostles on the battlefield.