You can only use this effect of "Guardragon Shield" once per turn
Famous examples include the Legendary Dragons (could fuse with anything of a certain category to create a new monster with varied effects), Neo Galaxy-Eyes Tachyon Dragon (could "time travel" by reverting the gamestate), The Seal of Orichalcos (allows a player to put Monsters in the Spell/Trap Zone), Supreme King Z-Arc (counted as Fusion, Synchro, Xyz, and Pendulum simultaneously), and the Meklord Emperors (consisted of five monsters summoned simultaneously to make a whole)
Special Summon 2 "Tellus Wing Tokens", also you cannot Special Summon for the rest of this turn, except from your hand
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It lets kids relive the intense card game Duels from the TV show
C Common Goyo Guardian X EARTH Level 6 [ WarriorSynchroEffect ] ATK 2800 DEF 2000 1 EARTH Tuner + 1+ non-Tuner monsters When this card destroys an opponent's monster by battle and sends it to the GY: You can Special Summon that monster to your field in Defense Position
