mtg urza card Urza's, 31 cards The Brothers War (BRO) #296 Illustrated by Cosmin Podar Magic Urza - MTG Wiki

I dont think you could feasibly fit anything else on a 3-mana creature

In addition to the beautiful reprints, the deck includes powerful chase cards, like Nykthos, Shrine to Nyx, and Gisela, as well as a never-before-printed card, Arden Angel

As if this didnt make them indispensable already, they can also be a rather slow token generator

Creature - Shapeshifter Color tag templates(None) Cryptoplasm At the beginning of your upkeep, you may have this creature become a copy of another target creature, except it has this ability

I think I have one Avon Plains from back in the day but I have a hard time paying that much for basic land these days