what are link cards in yugioh VRAINS: How to Summon! The 10 Best Link Monsters

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Since it is a Tuner without restricting itself to being used only for a specific Monster, Road Warrior can be used for other monsters however, it is essentially treated as a Level 2 Tuner for the Synchro Summon of any Monster other than Road Warrior

But what solidifies Shaymin VSTAR as a real comeback kid is its VSTAR Power, Star Bloom

R Rare Suijin X WATER Level 7 [ AquaEffect ] ATK 2500 DEF 2400 Once while face-up on the field, during damage calculation in your opponent's turn, if this card is being attacked (Quick Effect): You can target the attacking monster