Nature Shields Its Own is an Archenemy scheme that creates a blocking creature (green plant) any time the Archenemy is attacked and the attack is not blocked. We ran into a few issues last night playing this scheme in a game. The Archenemy was attacked by a flying creature as well as one with protection from Green. Neither was blocked, and a plant was created blocking each. The part we did not understand was whether the plant tokens could actually block the attackers.
Do abilities that say "Create creature X blocking attacking creature Y." allow X to block Y even if normally X could not be declared as a blocker?