yugioh speed duel duelists of shadows card list GX: Release Events – Yu-Gi-Oh! My Speed Duel decks! :

If an effect adds additional combat phases to a turn and a creature with a boast ability attacks more than once during that turn, its boast ability can still be activated only once

Toss it into any go-wide deck and pair it with an instant-speed fireball like Comet Storm, and watch the sparks fly

Which basically means, if youve got Questing Beast and an untapped Maze of Ith, odds are pretty good your opponents biggest and baddest creatures will look elsewhere during their attack steps

also it remains on the field until the end phase of your next turn

With some of the lowest numbers in Pristine 10 in the Pop Report, these cards are impressive