Oasis the shielded city

{t} Add {1}, put a shield counter on Oasis the
shielded city
Creatures you control get +0/+1 for each shield counter on Oasis the shielded city
Remove a shield counter from Oasis the shielded city: Prevent the Next 1 damage that would be dealt to you
"The biggest settlement on Gobakhan, and one of the most protected"