Maester Seymour appears in 189 public decks. The most-played cards are Gyre Sage, Sol Ring and Inspiring Call. The strongest synergies by lift are Ornery Tumblewagg, Oran-Rief, the Vastwood and Defiler of Vigor.

Basic Land — Forest

Creature — Elf Druid

Artifact

Instant

Enchantment

Creature — Elemental

Enchantment

Legendary Artifact

Enchantment

Creature — Elf Druid

Creature — Spirit

Creature — Elf Druid

Creature — Hydra

Instant

Creature — Elf Shaman Mutant

Legendary Creature — Elf Advisor

Creature — Elf Druid

Legendary Artifact

Enchantment

Land

Instant

Instant

Creature — Insect

Sorcery

Creature — Human Warrior

Legendary Creature — Elf Noble

Artifact

Creature — Hydra

Enchantment — Class

Creature — Plant Wurm

Land

Creature — Hydra

Legendary Artifact

Sorcery

Legendary Creature — Spirit

Legendary Creature — Elf Druid

Enchantment

Creature — Phyrexian Wurm

Sorcery

Artifact Creature — Construct

Legendary Artifact

Land

Artifact — Equipment

Land

Enchantment

Legendary Creature — Plant Druid

Creature — Hydra

Creature — Brushwagg Mount

Sorcery

Creature — Elf Druid

Enchantment — Aura

Sorcery

Sorcery — Arcane

Creature — Elemental Hydra

Enchantment

Land

Instant

Sorcery

Creature — Elf Druid // Land

Creature — Brushwagg Mount
In 30% of these decks, 1587× its usual rate.

Land
In 45% of these decks, 477× its usual rate.

Creature — Phyrexian Wurm
In 34% of these decks, 420× its usual rate.

Creature — Insect
In 43% of these decks, 417× its usual rate.

Legendary Creature — Elf Advisor
In 47% of these decks, 388× its usual rate.

Sorcery
In 30% of these decks, 364× its usual rate.

Creature — Hydra
In 53% of these decks, 289× its usual rate.

Legendary Creature — Elf Noble
In 40% of these decks, 283× its usual rate.

Creature — Elf Druid
In 71% of these decks, 275× its usual rate.

Creature — Hydra
In 31% of these decks, 275× its usual rate.

Enchantment — Aura
In 29% of these decks, 212× its usual rate.

Legendary Creature — Spirit
In 35% of these decks, 151× its usual rate.