Safeguard Shelter

Bias - {w/u}/{w}{u} (The ability you choose when you cast this spell depends on the color of mana you spent
to cast it. Choose the first if {w} was paid. Choose the second if {u} was paid. Choose both if {w}{u} was paid.)
(1st) - Prevent all combat damage that would be dealt this turn.
(2nd) - Counter target activated or triggered ability. (Mana abilities can't be targeted)