the declared Normal Monsters and "Primite" monsters you control cannot be destroyed by battle (until the end of your opponent's turn), then if you control no monsters, you can Special Summon 1 declared Normal Monster from your Deck in Defense Position
If the other methods of sight, feel and smell doesnt cut it for you, you can always rely on this method
Curiously, it appears that one of these is a guaranteed, and very gay, Llanowar Elves, while the other two are Elf Warrior tokens
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If you haven't played this format before but are planning on picking up one of these decks, check out our guide on how to play MTG Commander for a quick crash course
Then resolve Adrians ETB, exiling the mana rocks and any creatures you want to enter