Hiei, Dragon Within (CR YYHDT 1/4 Serial Numbered) 068/100

Enhance [Tenacious] Lose 1 health: This attack gets +1 or -2 speed.
Response Commit: After your rival plays a block, seal and discard it. Return this attack to its printed speed and damage, and they may try to block this attack a second time.
"Tenacious—This ability is playable while committed."