Like most Magic: The Gathering cards, the value of Dimir Signet depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Aetherdrift Commander)
The trample aspect is what gives the card something extra
Sacrifice after III.) I - This Saga gains ": Add ."II - This Saga gains ", : Create a 0/0 colorless Construct artifact creature token with 'This token gets +1/+1 for each artifact you control.'"III - Search your library for an artifact card with mana cost or , put it onto the battlefield, then shuffle
Several upcoming Pokmon card packs are also on the way, including the exciting Surging Spark s card set, coming to the West in November
I still can't imagine being able to do anything on the level of what I consider to be a truly great alter, but it's fun and I can tell that I'm improving
My final note here is that blink strategies arent going to be for everyone