Professor Rowan (123/132) [Diamond & Pearl: Secret Wonders] 198 You must be able to

You must be able to Ritual Summon to activate and to resolve this effect

then this card gains 300 ATK until the end of this turn for each monster destroyed by this effect and sent to the Graveyard

Set: Structure Deck: Machina Mayhem Card type: Continuous Spell Rarity: Common Attack: 0 Defense: 0 If you have only 1 original (printed) Type of monster in your Graveyard

You can only Special Summon "Dynatherium" once per turn this way

) Once per turn: You can Special Summon 1 Level 4 monster from your hand

Professor Rowan (123/132) [Diamond & Pearl: Secret Wonders] 198 You must be able toSet: Diamond & Pearl: Secret Wonders Type: Supporter Rarity: Uncommon