Scion of Opulence

Whenever this creature or another nontoken Vampire you control dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")
{R}, Sacrifice two artifacts: Exile the top card of your library. You may play that card this turn.

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Foundations Jumpstart

Whenever Scion of Opulence or another nontoken Vampire you control dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")
{R}, Sacrifice two artifacts: Exile the top card of your library. You may play that card this turn.

Crimson Vow Commander

Whenever Scion of Opulence or another nontoken Vampire you control dies, create a Treasure token.
{R}, Sacrifice two artifacts: Exile the top card of your library. You may play that card this turn.

Playing a card this way follows all the normal timing rules for that card. For example, if you play a land this way, you may do so only during your main phase while the stack is empty and only if you haven't yet played a land (unless another effect allows you to play additional lands).

Treasure

{T}, Sacrifice this token: Add one mana of any color.