manga booster box sb01 01 Booster [DBS: Fusion World] Dragon - -MANGA BOOSTER 01[SB01]-

It gives all your legendary and artifact spells flash, and doubles up any enter or leave-the-battlefield triggers from them

Talking to him or challenging him to a duel results in the same message

Fetch lands, or other lands that allow you to search your deck, are also especially helpful since a 99-card deck needs to be thinned out a lot more than a 60-card one

this card gains half that monster's ATK until the end of this turn

The similarity in the names is just a coincidence

O-Kagachi is in this weird spot where there's much better beaters at 6 mana (heck, Territorial Hellkite is a better beater at 4) and there's much better rattlesnakes at much less mana, such as Karmic Guide, Soul Snare, even Seal of Primordium