2 monsters with the same Attribute but different Types Your opponent cannot target this card, or monsters on the field with the same Attribute as this card, with card effects. Once per turn (Quick Effect): You can declare 1 Attribute; this card becomes that Attribute until the end of this turn.
Mudragon of the Swamp constantly changing his attribute can give your opponent openings to use targeting effects. DNA Transplant changes all monsters on the field to a selected attribute so Mudragon’s effect will cover every monster without constantly needing to change attributes. Scroll of Bewitchment can permanently change Mudragon’s attribute.
Not useful in any deck, just one of those dead SR cards that are usually added to all packs. The idea to protect a certain type from targeting effects would've been nice, sadly if you chain after it (or other cards on field) were targeted it does nothing, and similarly targeting traps can be chained to its activation.