edhseer Commander synergy, explained
Instant
Mana cost: {2}{U}
Until end of turn, you may activate loyalty abilities of Jace planeswalkers you control on any player's turn any time you could cast an instant.
on-cast — grants a keyword
on-cast — extra loyalty
Empower Jace 8.
on-cast — puts 8 counters on it
Causes: nothing.
Cares about: nothing.
an instant is cast — 3,931 cards in the game can cause this (Jace's Machinations is one).
When Jace's Machinations 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 (Jace's Machinations is one).
When Jace's Machinations is cast:
5 other cards care about it too. These are the ones with the most connections.