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Caged Sun

As Caged Sun enters the battlefield, choose a color.
Creatures you control of the chosen color get +1/+1.
Whenever a land’s ability causes you to add one or more mana of the chosen color, add one additional mana of that color.

Rarity : Rare
Types : Artifact
Artist : Scott Chou
Cost converted to mana : 6

Rulings

1 June 2011
Caged Sun’s triggered ability is a mana ability, which means the ability doesn’t use the stack and can’t be responded to.

Thrummingbird

Flying Whenever Thrummingbird deals combat damage to a player, proliferate. (You choose any number of permanents and/or players with counters on them, then give each another counter of a kind already there.)

Murmuring Bosk

({T}: Add {G}.) As Murmuring Bosk enters the battlefield, you may reveal a Treefolk card from your hand. If you don't, Murmuring Bosk enters the battlefield tapped. {T}: Add {W} or {B}. Murmuring Bosk deals 1 damage to you.