Luxior, Giada's Gift
Legendary Artifact — Equipment
Equipped creature gets +1/+1 for each counter on it.
Equipped permanent isn't a planeswalker and is a creature in addition to its other types. (Loyalty abilities can still be activated.)
Equip planeswalker
Equip 
Volkan Baǵa
Magic Online Promos (PRM)
• #99763Rulings
“Equip planeswalker” is a variant of the equip ability. “Equip planeswalker [cost]” means “[Cost]: Attach this permanent to target planeswalker you control as though that planeswalker were a creature. Activate only as a sorcery.”
(wotc • 2022-04-29)
Unless another effect is making that planeswalker a creature with a power and toughness, the equipped planeswalker has base power and toughness 0/0.
(wotc • 2022-04-29)
Rulings
“Equip planeswalker” is a variant of the equip ability. “Equip planeswalker [cost]” means “[Cost]: Attach this permanent to target planeswalker you control as though that planeswalker were a creature. Activate only as a sorcery.”
(wotc • 2022-04-29)
Unless another effect is making that planeswalker a creature with a power and toughness, the equipped planeswalker has base power and toughness 0/0.
(wotc • 2022-04-29)