edhseer Commander synergy, explained
Instant // Land
Mana cost: {1}{W}
Target creature you control gains protection from the color of your choice until end of turn.
on-cast — grants a keyword
This land enters tapped.
Add {W}.
activated {T} — adds 1 mana
Causes: nothing.
Cares about: nothing.
a land enters the battlefield — 1,560 cards in the game can cause this (Sejiri Shelter is one).
When Sejiri Shelter // Sejiri Glacier enters:
199 other cards care about it too. These are the ones with the most connections.
an instant is cast — 3,931 cards in the game can cause this (Sejiri Shelter is one).
When Sejiri Shelter // Sejiri Glacier is cast:
427 other cards care about it too. These are the ones with the most connections.
anything is cast — 31,128 cards in the game can cause this (Sejiri Shelter is one).
When Sejiri Shelter // Sejiri Glacier is cast:
5 other cards care about it too. These are the ones with the most connections.