one piece card game brook Memorial Collection Super Rare Eb01-046 BISAI Extra Booster This Brook Alt-Art gives me

Once you attack with Mulan, all your characters can challenge your opponents readied characters

The first of his two abilities is Skilled Combatant

To triple a creature's power, that creature gets +X/+Y, where X is twice that creature's power and Y is twice that creature's toughness when Tifa's Limit Break resolves

That ability seems pretty situational, but might have some use with Song-focused decks

[23] If you and your opponent have evenly-matched Characters or if you have more Characters than your opponent, then challenge instead to slow down their progress

It emphasizes Steels raw strength and Sapphires cunning tempo, giving players a commanding board presence