Ishizu Ishtar ( Duel Links ) Ishizu Ishtar is a playable Legendary Duelist in " Yu - Gi - Oh ! Duel Links " . This is a video game depiction of Ishizu Ishtar , a character from the " Yu - Gi - Oh ! " anime . She appears in - game after the player claims her Character Unlock Mission reward for successfully Summoning 200 LIGHT monsters . Yellow Gate Key s are required to Duel Ishizu Ishtar at the Gate . Biography . Immediately after the player claims the reward for Ishizu Ishtar ' s appropriate Character Unlock Mission , they will encounter Ishizu for the first time . She remains silent for a moment , before stating she didn ' t expect to ever stand on the " battlefield " again - something she did not expect from Kaiba . She then questions how she has her Millennium Necklace , having already given it to Yugi during Battle City , before she begins to wonder if this world has recreated the abilities she had during Battle City . Ishizu then wonders if this means Marik is in Duel World as well . She grows saddened , as she wonders if Kaiba has basically forced her to relive the horrors she faced back then . Until the player manages to defeat Ishizu at least once , whenever they challenge Ishizu to a Duel , she says that she now understands that the player must defeat her if they are to proceed . She recognizes that this is her role in this world and prompts the player to defeat her in order to take control of their own destiny . However , she also warns the player that she will not make their Duel an easy one , claiming that the player will see that her strategies have no equal . Until the player manages to defeat Ishizu at least once , whenever they lose to her , she announces that she won because her victory was never in doubt . She then offers the player a piece of advice : Although she has the power to see the future , that does not necessarily mean that there is only one , as the future can be changed . She reminds the player that they always have the power to change the future , and urges them to believe in their cards . Upon Ishizu ' s first defeat , she will say , " Nicely done . " She then tells the player that the path to the future is for them to choose , so they should choose wisely . However , she also tells them to not forget that she is forever a Duelist , as this means she may stand in their way again in the future . When that time comes , she says , the both of them should have an honorable Duel . After the player redeems their final unclaimed reward for Ishizu Ishtar ' s Character Unlock Missions , they will encounter Ishizu again , who tells the player that she attained something in her previous Duel : the light of hope . She continues by saying that even if the future is overshadowed by despair , people have the ability to change the future . She admits she cannot foresee what awaits people in Duel World , but she will keep fighting for a brighter tomorrow , and that she ' ll battle using her cards ( which includes the " Blast Held by a Tribute " card ) . Level - up rewards . The following lists are the rewards the player accumulates from having Ishizu Ishtar reach a certain Level . Duel rewards . When dueling against Level 40 Ishizu Ishtar , these are the only cards that can drop ; at lower levels , cards from the standard pool for Legendary Duelist s may also drop .