Ormendahl, the Corrupter (PMID)

Jerren, Corrupted Bishop

Legendary Creature — Human Cleric

Whenever Jerren, Corrupted Bishop enters the battlefield or another nontoken Human you control dies, you lose 1 life and create a 1/1 white Human creature token.
: Target Human you control gains lifelink until end of turn.
At the beginning of your end step, if you have exactly 13 life, you may pay . If you do, transform Jerren.

2/3

Ormendahl, the Corrupter

Legendary Creature — Demon

Flying, trample, lifelink
Sacrifice another creature: Draw a card.

6/6

Yongjae Choi
109s/168
uuid: 3ae782ee-969a-585f-b3e8-574db720b6e2

Legalities

commander: legal
legacy: legal
modern: legal
pauper: legal
vintage: legal
brawl: legal
pioneer: legal
standard: legal

Rulings

2021-09-24:
Multiple instances of lifelink are redundant, so giving lifelink to a Human that already has it gives no additional benefit.
2021-09-24:
Jerren's last ability will trigger only if you have exactly 13 life at the beginning of your end step. You will be able to pay {4}{B}{B} only if you have exactly 13 life as that ability begins to resolve. If your life total isn't 13 at that point, the ability will have no effect. You won't be able to pay {4}{B}{B} and Jerren won't transform.
2021-09-24:
If, while activating mana abilities during the resolution of Jerren's last ability, you somehow gain or lose life, you will still be able to finish paying the cost and Jerren will still transform.

Jerren, Corrupted Bishop // Ormendahl, the Corrupter (PMID)