edhseer Commander synergy, explained
Sorcery
Mana cost: {1}{U}{U}
Each opponent exiles cards from the top of their library until that player has exiled cards with total mana value 20 or greater.
on-cast —
Causes: exile a card.
Cares about: nothing.
anything is exiled — 2,497 cards in the game can cause this (Tasha's Hideous Laughter is one).
a sorcery is cast — 3,720 cards in the game can cause this (Tasha's Hideous Laughter is one).
When Tasha's Hideous Laughter is cast:
424 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 (Tasha's Hideous Laughter is one).
When Tasha's Hideous Laughter is cast:
5 other cards care about it too. These are the ones with the most connections.