yugioh master duel ignister deck I grabbed this @ignister deck list and played with it for may be 1st or Unlimited Edition Ignister Decks - Yu-Gi-Oh! Card

Some people believed it was a relic of the past and would see no play

The equipped Monster Gains 500 ATK, and When Battling is immune to all card effects

All "Gravekeeper's" monsters gain 500 ATK and DEF

For instance: if you had three Clues, enough mana, and all the relevant cards exiled under Lazav, you could cast Cackling Counterpart targeting Lazav, hold priority before it resolves, sacrifice a Clue to trigger Lazav to transform him into Marionette Master, hold priority again, sacrifice another Clue to trigger Lazav to transform into Octavia, Living Thesis, hold priority once more, cast Armor of Shadows, let everything resolve, then sacrifice a final Clue