One is in this set of stellar crown and the other is a promo from obsidian flames
add 1 monster with 2400 ATK/1000 DEF and the same Attribute from your Deck or GY to your hand, then, immediately after this effect resolves, you can Normal Summon 1 Zaborg the Thunder Monarch, Mobius the Frost Monarch, Thestalos the Firestorm Monarch, Granmarg the Rock Monarch, Raiza the Storm Monarch, or Caius the Shadow Monarch
Energy cards fuel your Pokmons attacks, and their strategic management is paramount
Double-Faced Substitute Card currently starts at $ 0.26
Alas, the Vanguard format never really gained much traction, thus the prices of the cards are stunted greatly by the lack of demand