Encantamento
Toda vez que uma mágica ou habilidade for colocada na pilha, re-selecione seu alvo, aleatoriamente, se ela tiver um único alvo. (Escolha dentre todos os alvos válidos).
The ability triggers when a spell or ability is put on the stack, and this target-changing ability itself goes on the stack. This means that the spell or ability keeps its original target until this ability resolves. You determine the new target when this ability resolves, at which time the set of legal targets may have changed.