Conclave Mentor
Creature — Centaur Cleric
If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on that creature instead.
When this creature dies, you gain life equal to its power.
"I have faith in your potential."
Raoul Vitale
Core Set 2021 (M21)
• #216Rulings
If a creature you control would enter the battlefield with a number of +1/+1 counters on it, it enters with that many plus one instead.
(wotc • 2020-06-23)
Conclave Mentor's first ability doesn't apply to itself if it's somehow entering the battlefield with a +1/+1 counter on it.
(wotc • 2020-06-23)
If two or more effects attempt to modify how many counters would be put onto a creature you control, you choose the order to apply those effects, no matter who controls the sources of those effects.
(wotc • 2020-06-23)
Use Conclave Mentor's power as it last existed on the battlefield to determine how much life you gain.
(wotc • 2020-06-23)
If you control two Conclave Mentors, the number of +1/+1 counters put on a creature is two plus the original number. Three Conclave Mentors add three, and so on.
(wotc • 2020-06-23)
Rulings
If a creature you control would enter the battlefield with a number of +1/+1 counters on it, it enters with that many plus one instead.
(wotc • 2020-06-23)
Conclave Mentor's first ability doesn't apply to itself if it's somehow entering the battlefield with a +1/+1 counter on it.
(wotc • 2020-06-23)
If two or more effects attempt to modify how many counters would be put onto a creature you control, you choose the order to apply those effects, no matter who controls the sources of those effects.
(wotc • 2020-06-23)
Use Conclave Mentor's power as it last existed on the battlefield to determine how much life you gain.
(wotc • 2020-06-23)
If you control two Conclave Mentors, the number of +1/+1 counters put on a creature is two plus the original number. Three Conclave Mentors add three, and so on.
(wotc • 2020-06-23)