collector booster box march of the machines Amazon.com: Magic: Gathering the Machine including 1–2 card(s) of rarity Rare or higher and 3–5 Uncommon March of the Machine Collector

Market price $4.49 Based on the latest market prices tracked on TCG Stacked

Inspiring Overseer and Thopter Engineer are fine cards, but there are better options at three mana

Legendary Creature - Human Shaman Discard (CTRL to add secondary) Draw Artist's Talent (Gain the next level as a sorcery to add its ability.) Whenever you cast a noncreature spell, you may discard a card

Interrupts functioned similarly to instants

Cyclonic Rift (8) is a commonly used removal spell as it is a very cheap cover all that has the potential to be game winning should a game go super long

I would only caution getting the Saga sets last simply to avoid having it and being frustrated because you dont have the card pool needed to successfully complete them