yugioh six samurai new cards Secret - Fuma Oh trading and collectible card game (TCG/CCG) Secret Six Samurai - Doji

The effect is always active, even during opponents turns, so creatures equipped with flash can help buff your defense in the middle of combat

Puzzle Of Time Puzzle of Time is a Trainer card that was first introduced in the XY expansion of the Pokmon Trading Card Game

And then there are the Mono-Red, Boros, Izzet, Gruul versions all which can bring their own flavor

He's entirely correct

When you have reduced your opponent's Life cards to 0, use this card to break through their defenses with an unexpected, unblockable attack!

That new information comes from eb576dcfe on Twitter who, rather amusingly, goes by the name Not A Leaker