Among the solitude-loving giantkind, teamwork is unusual. But he appreciates hearing the occasional "Swing down and to your left."

Blind-Spot Giant

This creature can't attack or block unless you control another Giant.

Modern Masters

Blind-Spot Giant can't attack or block unless you control another Giant.

Lorwyn

Blind-Spot Giant checks if you control another Giant only as you declare it as an attacking or blocking creature. Once you do, if you lose control of your other Giants, Blind-Spot Giant won’t stop attacking or blocking.