edhseer Commander synergy, explained
Creature — Bird Bear
Mana cost: {2}{G}
Whenever this creature attacks a player who controls eight or more lands, look at the top eight cards of your library. You may put a creature card from among them onto the battlefield tapped and attacking that player. Put the rest on the bottom of your library in a random order.
triggered —
Causes: put a creature onto the battlefield.
Cares about: nothing.
a Bear enters the battlefield — 128 cards in the game can cause this (Owlbear Cub is one).
a Bird attacks — 486 cards in the game can cause this (Owlbear Cub is one).
When Owlbear Cub attacks:
a Bird creature is cast — 486 cards in the game can cause this (Owlbear Cub is one).
1 other card cares about it too. These are the ones with the most connections.
a Bird deals combat damage — 486 cards in the game can cause this (Owlbear Cub is one).
a nontoken Bird enters the battlefield — 487 cards in the game can cause this (Owlbear Cub is one).
a Bird enters the battlefield — 538 cards in the game can cause this (Owlbear Cub is one).
1 other card cares about it too. These are the ones with the most connections.
anything attacks — 17,934 cards in the game can cause this (Owlbear Cub is one).
When Owlbear Cub attacks:
111 other cards care about it too. These are the ones with the most connections.
a creature attacks — 17,934 cards in the game can cause this (Owlbear Cub is one).
When Owlbear Cub attacks:
180 other cards care about it too. These are the ones with the most connections.
a creature blocks — 17,934 cards in the game can cause this (Owlbear Cub is one).
When Owlbear Cub blocks:
18 other cards care about it too. These are the ones with the most connections.
a nontoken creature attacks — 17,934 cards in the game can cause this (Owlbear Cub is one).
When Owlbear Cub attacks:
a creature enters the battlefield — 19,800 cards in the game can cause this (Owlbear Cub is one).
296 other cards care about it too. These are the ones with the most connections.
anything enters the battlefield — 26,499 cards in the game can cause this (Owlbear Cub is one).
30 other cards care about it too. These are the ones with the most connections.