Bonus points if you have a playmat that plays off of these two themes as well
Whenever Mishra, Lost to Phyrexia attacks or enters the battlefield, you get to choose three from having an opponent discard two cards, dealing three damage to something, destroying an artifact or planeswalker, giving your creature menace and trample, giving enemy creatures -1/-4, or creating two Powerstone tokens
Some time later, further support for the Black Luster Soldier archetype integrated Gaia into them, with several Gaia cards that were tailored to supporting Black Luster Soldier and its summoning
You can only use each effect of "Amazement Assistant Delia" once per turn
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Still, it didn't technically meet the criteria, as it has all Slivers gain defender instead of having defender itself