edhseer Commander synergy, explained
Instant
Mana cost: {1}{U}
Choose target spell. You get {E}{E} , then you may pay any amount of {E}. Counter that spell unless its controller pays {1} for each {E} paid this way.
on-cast — puts 2 counters on it
on-cast —
Causes: put a counter on anything, counter a spell.
Cares about: nothing.
an instant is cast — 3,931 cards in the game can cause this (Aether Spike is one).
When Aether Spike is cast:
427 other cards care about it too. These are the ones with the most connections.
anything gets a counter — 4,415 cards in the game can cause this (Aether Spike is one).
When a permanent gets a counter thanks to Aether Spike:
4 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 (Aether Spike is one).
When Aether Spike is cast:
5 other cards care about it too. These are the ones with the most connections.