Goldhound
Artifact Creature — Treasure Dog
First strike
Menace (This creature can't be blocked except by two or more creatures.)
, Sacrifice this creature: Add one mana of any color.
The staccato clatter of its metal claws on pavement is unmistakable.
Donato Giancola
Streets of New Capenna (SNC)
• #108Rulings
Since Goldhound is a creature, its {T} ability can't be activated the turn that it enters the battlefield or the turn a player gains control of it unless it has haste.
(wotc • 2022-04-29)
If an effect refers to a Treasure, it means any Treasure artifact, not just a Treasure artifact token.
(wotc • 2022-04-29)
Even when it is on a creature, Treasure is an artifact type and not a creature type. Similarly, Dog is always a creature type and not an artifact type.
(wotc • 2022-04-29)
Rulings
Since Goldhound is a creature, its {T} ability can't be activated the turn that it enters the battlefield or the turn a player gains control of it unless it has haste.
(wotc • 2022-04-29)
If an effect refers to a Treasure, it means any Treasure artifact, not just a Treasure artifact token.
(wotc • 2022-04-29)
Even when it is on a creature, Treasure is an artifact type and not a creature type. Similarly, Dog is always a creature type and not an artifact type.
(wotc • 2022-04-29)