Gadrak, the Crown-Scourge

At the beginning of your end step, create a Treasure token for each creature that died this turn. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

Whenever this creature or another nontoken Vampire you control dies, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

, Sacrifice two artifacts: Exile the top card of your library. You may play that card this turn.

When this creature enters, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

Whenever you attack, you may sacrifice one or more Treasures. When you do, up to that many target creatures gain double strike until end of turn.

Each opponent must attack you or a planeswalker you control with at least one creature each combat if able.

At the beginning of your end step, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

When this creature enters or dies, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

Whenever one or more creatures you control deal combat damage to a player, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

At the beginning of your end step, if you control five or more artifacts, transform Storm the Vault.