Kumomaku, Cyber Spider

0: Create a 0/1 web token with reach and defender and "whenever this creature blocks, draw a card and tap attacking creature until next turn".
0: Kumomaku, Cyber Spider becomes a X/X Legendary Artifact Spider with Reach and Trample.
0: Remove all counters from Kumomaku: Choose that many non-land permanents. Their controllers sacrifices them. * Kumomaku can be your commander