Spooderman, Swarm Leader

Spooderman enters the battlefield with {x} +1/+1
counterson it, where {x} is its mana value plus its commander tax.

When Spooderman dies, create {x} 2/1 black dark spider creature tokens with deathtouch,
where {x} is Spooderman's power.

{t}, sacrifice a dark spider: put 2 +1/+1 counters on Spooderman.