"Magic 2011", +m/when(ever)?\s.*\s(becomes?\sblocked|blocks)/, +!bushido, +!flanking, +!rampage (3)
Flying
Whenever Goldenglow Moth blocks, you may gain 4 life.
Enchant creature
At the beginning of your upkeep, put a +1/+1 counter on enchanted creature.
When enchanted creature attacks or blocks, sacrifice Primal Cocoon.
Defender
Whenever Wall of Frost blocks a creature, that creature doesn't untap during its controller's next untap step.
Gatherer works better in the Companion app!