edhseer Commander synergy, explained
Enchantment
Mana cost: {1}{R}{R}
Blue creatures don't untap during their controllers' untap steps.
static — keeps permanents from untapping
At the beginning of each player's upkeep, that player may choose any number of tapped blue creatures they control and pay {4} for each creature chosen this way. If the player does, untap those creatures.
triggered — untaps a permanent
Causes: untap a creature.
Cares about: an upkeep.
a creature untaps — 519 cards in the game can cause this (Magnetic Mountain is one).
an enchantment is cast — 3,673 cards in the game can cause this (Magnetic Mountain is one).
When Magnetic Mountain is cast:
255 other cards care about it too. These are the ones with the most connections.
a nontoken enchantment enters the battlefield — 3,691 cards in the game can cause this (Magnetic Mountain is one).
an enchantment enters the battlefield — 3,743 cards in the game can cause this (Magnetic Mountain is one).
When Magnetic Mountain enters:
59 other cards care about it too. These are the ones with the most connections.