Shaggy

This spell can't be countered.
Hexproof, Trample, Vigilance, Haste, Menace, Indestructible.
When Shaggy enters the battlefield, create
Scooby Doo, a 4/8 legendary dog token with "At
the beginning of your upkeep, if you control a
card named Shaggy, investigate( Put a colorless
Clue token artifact onto the battlefield with: "{2},
Sacrifice this artifact: Draw a card.").