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The first effect is a "level down" effect, where, if a friendly Link Monster (for "Gashadokuro") or Synchro Monster whose original Level is 2 higher than themselves (for all except "Gashadokuro") is destroyed by battle or an opponent's card effect, they can banish 1 other Zombie monster from GY to Special Summon themselves from the GY
Hopefully, you can open the duel with Pumprincess to get counters to add up every turn, which makes cards easier to destroy with your Ghostricks and protects your own cards from being destroyed
With its Power Link active, you can deal 50 damage a turn for only one energy - allowing you to quickly rush down any deck that needs time to set up
The billionaire games mogul armed with a metal briefcase full of the series' (then) most powerful cards, and his Blue Eyes White Dragons are easily Yu-Gi-Oh!'s closest thing to a mascot monster