In Orzhov colors, this is very easy to accomplish, and you can kill your own Phyrexians for value
If all that you care about is winning, sure
Seasingers problem is that you can only use it to steal a creature from an opponent who controls an Island
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The fact that split cards change whether its in your hand, graveyard, or on the stack is important because of how rules consider each spell
2004-10-04 If an opponent steals control of Lich and no other effect prevents you from losing with a life total of zero, you will lose the game due to a zero life total as a State-Based Action before you can take any actions