If Sorcerous Squall is your first spell in the turn, then the stolen spell will be copied, potentially giving you a huge advantage over the battlefield
Combined with the immensely powerful Speed Wing attack that deals 120 damage, this card certainly proves itself to be a powerful opponent on the battlefield
In case you forgot them, here are the keywords: Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.) Bushido (When this blocks or becomes blocked, it gets +1/+1 until end of turn.) Can you see the important difference between them
Its an uncommon, of course, but theres just too many restrictions on it for me
Therefore, its always wise to compare the back of the card you're unsure about to the back of a card that is authentic