Not preventing the griffin being tapped now.
OK, to update
You did: Untap, Upkeep, Play Island.
Activate Deluge on my Shield Dancer (I prevented w/ Black)
Activate Deluge on my Griffin (not paying) - did you mean dancer? Either way I won't pay...
And you're still in your first main phase...
SpiderMan: 15
Hand: 9
In Play
(U,U) Plains x2
(U) Swamp
(T,T) Island x2
(U,U) Forest x2
(U) Mt
Rhystic Deluge (U: Tap target creature unless its controller pays 1)
(U) Sword Dancer (1/2, WW: Target attacking creature gets -1/-0 ueot)
(U) Thresher Beast (4/4, Whenever ~ becomes blocked, defending player sacs a land)
Graveyard: Rhystic Lightning, Plague Fiend, Outbreak
Removed from Game:
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BigBlue: 8
Hand: 10
In Play
(Ench) Rhystic Circle (1: Unless any other player pays 1, prevent the next damage from target source to me.)
(TT) Forest
(TU) Plains
(UU) Island
(T) Swamp
(T) Diving Griffin (2/2; Flying; Vigilance)
(S) Shield Dancer (1/3; 2W: The next time target attacking creature would deal damage to ~, it deals it to itself instead)
Graveyard: Thresher Beast, Mine Bearer
Removed from Game: