vampire yugioh cards Support (15 cards, New field spell) may be 1st or Unlimited Edition Vampire Count of the Everlasting

Tuner Spike uses his expertise to understand the things that help optimize decks such as mana ratios, card numbers and sideboard technology

Including drawing at the start of the opponent's turn, it is actually an effect that casts Sana on the opponent, but if you successfully use it at the start of the game, it reduces 5-6 cards to 4, which is quite annoying

While other cards can do this, it's the fact Arcum's Astrolabe only costs one mana from any snow land to cost that makes it so powerful it had to be banned across multiple formats.

Since she counts herself with her cost reduction, that can be a minimum of two mana for using it with a power of four or more