I could see this species evolving a fairly dark outlook on existence, to say the least, especially if even the most advanced technology, magic, or magical technology has consistently failed to alter their life cycle...at least not without producing all manner of horrifying mutations , a theme that already has some precedent in blue cards
The player who chooses the card to trash is the player who activated this card's effect
But if you step back look at the card as a whole, you see that the Moat fits into a larger theme
Cheap creatures that spread a counter roughly every turn are powerful, and these benefit greatly from playing fetch lands and ramp spells like Rampant Growth or Exploration
Contents: 15 Magic: The Gathering cards plus 1 Token or advertisement card 1 Rare or Mythic Rare card 3 Uncommon cards 9 Common cards 1 Basic Land card
tri.gx didn't specify how difficult this deck is to play