The goal is to either +1 and untap enough mana from mana rocks that youre basically getting Tezzeret for free, or -3 to tutor up a good artifact and leave Tezzeret in play
Given its play patterns to date, one copy should be more than enough for most players, mind you
For the oversized jumbo cards, there are a few options
The one thing that keeps this card in check is the necessity to build around it
Deck 2: Orcust 1 Red-Eyes Black Dragon 1 Dark Magician 1 Orcust Brass Bombard 1 Orcust Cymbal Skeleton 1 Orcust Harp Horror 3 Orcust Knightmare 1 World Legacy World Wand 1 Armageddon Knight 2 Dark Grepher 2 Mathematician 3 Girsu, the Orcust Mekk-Knight 2 Maxx C 3 Ash Blossom & Joyous Spring 1 Effect Veiler 1 Red-Eyes Fusion 1 Reinforcement of the Army 1 Foolish Burial 1 Orcustrated Babel 2 Orcustrated Return 3 Called by the Grave 3 Crossout Designator 2 Just One Forbidden Drop 2 Infinite Impermanence 1 Orcust Crescendo 1 Linkriboh 1 Galatea, the Orcust Automaton 2 I:P Masquerena 1 Knightmare Phoenix 1 Predaplant Verte Anacodna 1 Knightmare Unciron 1 Longirsu, the Orcust Orchestrator 1 Topologic Trisbaena 1 Topologic Zeroboros 1 Topologic Bomber Dragon 1 Accesscode Talker 2 Dingirsu, the Orcust of the Evening Star 1 Red-Eyes Dark Dragoon Side Deck: 2 D.D
Search your deck for a Basic Pokmon and put it onto your Bench