If they don't know your strategy, you could try and fool them, or just pick three super-cards and watch them struggle to guess which one is least dangerous
The Dragonstorm cycle can create wonderful value when you repeatedly play cards like Encroaching Dragonstorm and Breaching Dragonstorm
Legendary Creature - Human Warrior Wrenn and Realmbreaker Lands you control have ": Add one mana of any color." +1: Up to one target land you control becomes a 3/3 Elemental creature with vigilance, hexproof, and haste until your next turn
The strongest of the keywords is Deathtouch, turning low-cost and low-powered hobbits/human creature types into serious threats
A Universes Beyond release might be a full set, preconstructed decks, or simply Secret Lair drops that introduce mechanically unique cards and reskins
Entomb puts your fattie combo piece in the bin, and it does so exactly when you want it to