The Warring Triad

If an effect causes The Warring Triad to lose all abilities, its ability that causes it to stop being a creature still applies if appropriate.

If The Warring Triad stops being a creature, it loses the type creature and the creature type God. It continues to be a legendary artifact.

If The Warring Triad is attacking or blocking and it stops being a creature, it will be removed from combat. It won't rejoin combat if it resumes being a creature later during that combat.

The type-changing ability that can make The Warring Triad not be a creature functions only on the battlefield. It's always a creature card in other zones, regardless of how many cards are in your graveyard. It's always a creature spell while it's on the stack.

The Warring Triad's last ability isn't a mana ability. It uses the stack and can be responded to.