[fix]Grixis Slavedriver cast normally legacy = unearth text

[Aswan jaguar]

Describe the Bug:
Grixis Slavedriver works fine but when cast normally comes in play with a legacy card that has the unearth text. It is confusing because you think it was unearthed.

Which card did behave improperly?
Grixis Slavedriver

Which update are you using? (date, name)Which type? (duel, gauntlet, sealed deck)
Manalink dev 778ccb5 version - duel

What exactly should be the correct behavior/interaction?
Grixis Slavedriver if the legacy when cast is indeed needed to cover all cases of leaving the battlefield then should have the text of 1st ability "When Grixis Slavedriver leaves the battlefield, create a 2/2 black Zombie creature token". And have the 2nd ability when it is unearthed with the unearthed text as it is. Although I am pretty sure we have other cards with same effect that work fine without a legacy.

Are any other cards possibly affected by this bug?
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[Aswan jaguar]

Fixed in commit f0fc042.