edhseer Commander synergy, explained
Instant
Mana cost: {3}{B}
You may pay {1}{B} rather than pay this spell's mana cost.
If the {1}{B} cost was paid, an opponent draws a card.
on-cast — draws you 1 card
Exile target creature or planeswalker.
on-cast —
Causes: draw a card, exile a creature, exile a planeswalker, a creature leaves the battlefield, a planeswalker leaves the battlefield.
Cares about: nothing.
a creature is exiled — 1,003 cards in the game can cause this (Baleful Mastery is one).
When a creature is exiled thanks to Baleful Mastery:
5 other cards care about it too. These are the ones with the most connections.
anything is exiled — 2,497 cards in the game can cause this (Baleful Mastery is one).
a card is drawn — 3,815 cards in the game can cause this (Baleful Mastery is one).
When a permanent makes a player draw a card thanks to Baleful Mastery:
57 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 (Baleful Mastery is one).
When Baleful Mastery 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 (Baleful Mastery 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 (Baleful Mastery is one).
When a creature leaves the battlefield thanks to Baleful Mastery:
25 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 (Baleful Mastery is one).
When Baleful Mastery is cast:
5 other cards care about it too. These are the ones with the most connections.