Thank you for the guide @styluspt Not bad at all
Peacocks text box suggests two deckbuilding avenues: first, artifacts that youd want to sacrifice for a benefit (other than the Clue draw a card ability), and second, you want creatures that give you a benefit by being unblockable (other than just smashing life totals)
4 Rapidash Best High Speed Attacker Card Stage: 1 HP: 100 Evolves from: Ponyta If there's a need to attack as early as possible during the match, then Rapidash would be the top choice in this case
[TMC] Splinter, the Mentor $18.00 Splinter, the Mentor takes the turtles deck in another direction, focusing on the sneak ability at first, but you can throw in some sacrifice effects
Things get really ugly when this card is bestowed onto a stronger creature
The set even gave us the innocuously powerful mana filtration device known as Arcum's Astrolabe