"I concede it was a cheap shot, but it was the only one I could afford."
—Gerrard of the Weatherlight

Stun

Target creature can't block this turn.
Draw a card.

Tempest Remastered

"Fortunately, merfolk aren't used to opponents with feet."
—Gerrard of the *Weatherlight*

Tenth Edition

"They certainly are well protected. Too bad for them they're not well balanced."
—Sisay

Invasion

"I concede it was a cheap shot, but it was the only one I could afford."
—Gerrard of the *Weatherlight*

Tempest

Target creature cannot block this turn.
Draw a card.

Must be used before blockers are declared in order to affect blocking decisions. You can’t wait to see what your opponent declares and then try to stop them.

You can use it after combat or even on a creature which can’t possibly block this turn because it’s that player’s turn to attack, but it generally has no effect other than to let you draw a card.