edhseer Commander synergy, explained
Legendary Instant
Mana cost: {2}{B}{B}
(You may cast a legendary instant only if you control a legendary creature or planeswalker.)
Destroy target creature. If its controller has more than four cards in hand, they exile cards from their hand equal to the difference.
on-cast —
on-cast —
Causes: a creature dies, exile a card.
Cares about: nothing.
anything is exiled — 2,497 cards in the game can cause this (Isildur's Fateful Strike is one).
a creature in a graveyard — 2,769 cards in the game can cause this (Isildur's Fateful Strike is one).
Isildur's Fateful Strike puts cards into the graveyard that:
799 other cards care about it too. These are the ones with the most connections.
a nontoken creature dies — 2,769 cards in the game can cause this (Isildur's Fateful Strike is one).
When a creature dies thanks to Isildur's Fateful Strike:
60 other cards care about it too. These are the ones with the most connections.
a creature dies — 2,830 cards in the game can cause this (Isildur's Fateful Strike is one).
When a creature dies thanks to Isildur's Fateful Strike:
450 other cards care about it too. These are the ones with the most connections.
a creature goes to a graveyard — 3,011 cards in the game can cause this (Isildur's Fateful Strike is one).
When a creature hits the graveyard thanks to Isildur's Fateful Strike:
10 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 (Isildur's Fateful Strike is one).
When Isildur's Fateful Strike is cast:
427 other cards care about it too. These are the ones with the most connections.
a nontoken creature leaves the battlefield — 4,133 cards in the game can cause this (Isildur's Fateful Strike is one).
3 other cards care about it too. These are the ones with the most connections.
a creature leaves the battlefield — 4,238 cards in the game can cause this (Isildur's Fateful Strike is one).
When a creature leaves the battlefield thanks to Isildur's Fateful Strike:
29 other cards care about it too. These are the ones with the most connections.
a card in a graveyard — 7,589 cards in the game can cause this (Isildur's Fateful Strike is one).
443 other cards care about it too. These are the ones with the most connections.