If you want them to really hate you, play Drannith Magistrate - a two mana card that stops your opponent's from casting their Commanders
however, we could easily be in the market for more than four of this kind of effect
Whenever this creature attacks, discard your hand, then draw three cards
She can draw cards even when attacking alone, and youll get maximum usage from her trample-granting transformation ability
Now, how much of that is due to the cards chosen, and how much is down to Lands being altogether less game-warping than say, Enchantments, is another question entirely
And since Boromir is three mana, you can even get him back with Sun Titan triggersI mean, who doesnt want to grind value with Sun Titan triggers