Taunting Elf

A creature that can never deal a point of combat damage sounds like a contradiction in a card built for the attack step, and that contradiction is the design. The forced-block clause hands the attacker something the rules normally reserve for the defender: control over the blocking declaration. Send this in alongside a wide board and every creature legally able to block is legally compelled to gang up on the Elf, leaving the rest of your attackers swinging into an empty zone. It is a Falter effect given a permanent's body. Where Falter says "creatures can't block this turn" off the top of the library, here you deploy the object a turn early and fire it the moment the alpha strike is ready. The cost of that flexibility is that the Elf does not survive what it sets up: a 0/1 that all blockers pile onto deals no damage and simply dies in the combat it enabled, so it functions as a spring-loaded "no blocks" you pay for in advance and spend exactly once. That fragility is the discipline that keeps the redirection from being a repeatable engine. The whole construction is a tidy statement of green's claim over how combat resolves: the attacker, not the defender, decides where the blocks go.