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Maester Seymour
Legendary Creature — Human Elf Cleric
At the beginning of combat on your turn, put a number of +1/+1 counters equal to Maester Seymour's power on another target creature you control. {3}{G}{G}: Monstrosity X, where X is the number of counters among creatures you control. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.)
Mana cost
2
G
Mana value
3
Printings
From
$0.37
EDHREC rank
#3709
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Formats
Legacy
Legal
Vintage
Legal
Commander
Legal
Rulings
6 Jun 2025
Monstrous isn't an ability that a creature has. It's just something true about that creature. If the creature stops being a creature or loses its abilities, it will continue to be monstrous.
6 Jun 2025
The value of X is determined only once, as Maester Seymour's last ability resolves.
6 Jun 2025
Once a creature becomes monstrous, it can't become monstrous again. If the creature is already monstrous when the monstrosity ability resolves, nothing happens.
6 Jun 2025
If Maester Seymour is no longer on the battlefield when its first ability resolves, use its power as it last existed on the battlefield to determine how many +1/+1 counters to put on the target creature.

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