2021 mtg booster box Magic: The Gathering Core Set (M21) Bundle | 10 Packs + 40 Lands (190 Cards) They’re the basis of Limited formats like Booster Draft and Sealed Deck Magic: The Gathering Core Set

Booster Box (Magic Tempest | Magic Cards) prices are based on the historic sales

This means you may cast your Extirpate by paying Replicates additional costs and get several copies of Replicate

The first counter allows Urzas Saga to tap for colourless mana, the second adds an ability you can pay two for to put a 0/0 Construct into play that gets +1/+1 for each artifact you control, and the final ability lets you search your library for an artifact with a mana cost of 0 or 1 and then put it straight into play

Under normal circumstances, you choose 1 Forward and it loses 4000 power until the end of the turn

I built a Nymris, Oona's Trickster deck after seeing the card in action in a draft because it looked like a ton of fun