Played fairly its primary use is answering big or expensive threats and hoping to flip over rubbish
Also once per turn, it can equip 1 monster your opponent controls as an Equip Card and make its own ATK/DEF equal to that monster's
This depends entirely on what cards you have, if theyre on the reserved list, and many more factors
Barnabas Tharmr Kraum, Ludevic's Opus is a big hasty dragon lookalike that punishes double spelling
Gagaga Magician - Gagaga Magic DARK 4 [ Spellcaster / Effect ] If this card is in your hand: You can Special Summon both it and 1 other "Zubaba", "Gagaga", "Gogogo", or "Dododo" monster from your hand or GY, except "Gagaga Magician - Gagaga Magic", and if you do, immediately after this effect resolves, Xyz Summon 1 "Zubaba", "Gagaga", "Gogogo", "Dododo", "Djinn", "Heroic Champion", "Number", "ZW -", or "ZS -" Xyz Monster using only those 2 monsters
Mid-tier cards (#510) have experienced more volatility, with some corrections from launch highs