(A creature with thoughtweft has all printed keyword abilities of other creatures you control with thoughtweft.) Once Brigid has been blocked, increasing the blocking creature's power to 3 or greater won't cause Brigid to become unblocked
a playset of this is actually eight Fogs
Delighted Halfling AND Wose Pathfinder Mana matters
Within this archetype, and even outside of it, cards like Inkshield, Solitary Confinement, and Energy Field can work wonders
Eternal Scourge I wouldnt be mentioning Eternal Scourge if Food Chain didnt exist, but Food Chain is certainly a card someone made for some reason, so I feel obligated to bring up the colorless creature that can loop with the enchantment to make infinite mana
And we can still get our artifacts back from exile using Karn, the Great Creator