efficiency, modern tempo play, and the kind of board-focused strategy that makes the color feel so different from the rest of the game
You can Special Summon this card (from your GY) by sending 1 LIGHT and 1 DARK monster from your hand to the GY
Out of that bunch, Sliver Gravemother definitely isnt the strongest
Instead, use Dialga as a wall in the Active Sport to absorb damage (150 HP is cool), and use the 2 Energy, 30 DMG Metallic Turbo to have your Benched Melmetal (or another Dialga EX) ready to hit in 2 turns only
The second benefit is that Kytheon transforms into Gideon, Battle-Forged if you attack with three or more creatures
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