Prof Oaks Research (98/112) (2004 2005) [Professor Program Promos] RC3 You can only use this

You can only use this effect of "Ascension Sky Dragon" once per turn

If a "Toon World(s)" you control would be destroyed by card effect

While you control a face-up "Six-Samurai" monster

you can select and activate 1 of these effect: •Destroy Spell or Trap Cards on the field up to the number of "Elemental Hero" and "Destiny Hero" monsters you control (not counting this card)

Dragunity Duelists won't want to miss this chance to find some of the most sought-after “Dragunity” cards from the Hidden Arsenal era

Prof Oaks Research (98/112) (2004 2005) [Professor Program Promos] RC3 You can only use thisSet: Professor Program Promos Type: Supporter Rarity: Promo