At the beginning of combat on your turn, other Spiders you control gain flying, first strike, trample, lifelink, and haste until end of turn.
Cosmic Spider-Man is a five-color Spider tribal commander that turns a wide board of Spiders into evasive, life-gaining attackers. Ramp into the commander, flood the board with Spider tokens and lords, then swing each combat with a team that has flying, first strike, trample, lifelink, and haste. The lifelink keeps you safe while you grind opponents out with hasty alpha strikes.
Five-color identity lets you run the best removal, ramp, and tutors in Magic
Built-in haste means every new Spider attacks immediately, enabling fast, surprise alpha strikes
Mass lifelink + first strike makes combats extremely lopsided and races nearly unwinnable for opponents
Self-contained value—needs no support to grant five powerful evasion/utility keywords
Spider tribal is shallow and weak; most Spiders are defensive bodies with low power
Board wipes hit you hard since the strategy relies on going wide
If the commander is removed before combat, your Spiders revert to grounded defensive creatures
Five-color mana base is demanding and pricey to assemble reliably