send 1 "Crystron" monster from your Deck to the Graveyard whose Level is different from that monster, and if you do, that monster becomes the Level of that monster sent to the Graveyard
That being said, these are aesthetically-appealing, well-designed cards with an interesting mechanic revolving around their ability to send cards to and from the Graveyard in order to extend their combos and potential
You'll want to summon the Herald of Ultimateness as soon as possible and use its effects to negate the enemy from special summoning monsters
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More importantly, it lets Koalas and Kangaroos attack when theyre in face-up Defense Position, and when they do, you apply their DEF for damage calculation instead of their ATK
This can set up some seriously spicy combos if you send the right card, and either way, itll load up your graveyard with more Lightsworns to use later