The Twelfth Doctor grants the Demonstrate ability to any spell cast from outside the players hand, which allows both the player and their opponents to copy the spell
Because shock lands have land types (Plains, Island, Swamp, Mountain, Forest), they are searchable with fetch lands, forming a powerful mana-fixing duo
The flavour of these early cards have your deck be the 'memorized' spells of a wizard, so the Mindstab Thrull literally rips out the ability to cast several spells from your opponent's mind
When you do, exile target creature an opponent controls until Shire Shirriff leaves the battlefield
If you dont need them on the battlefield, its excellent to loot the card away and enable delirium
Exerting your opponents' characters is key, as that lets you take out key engine pieces through challenging