It would certainly seem some bright, forward-thinking people set the system up that way.) As a Siege battle enters the battlefield, its controller chooses an opponent to be its protector
Typically, you want to keep the average mana cost as low as possible, otherwise, your cards will be too expensive to play on your turn
Though Dryad Arbor is a creature, you cant play it at instant speed since it is also a land and that is more important for Leyline of Anticipation
Moments Peace $2 Moments Peace was only been printed once, way back in Odyssey , and I dont think WotC wants to risk printing a card like this again in Standard-legal set not after a full year of Nexus of Fate shenanigans
Cards like Courser of Kruphix and Tireless Tracker are exceptional here but will be snatched up by any green deck, so it might be good for some of those payoffs to demand/reward a stronger commitment I'd consider Wayward Swordtooth as a more balanced version of the extra lands effect with a subgame that's fun and attainable (and not just by you!) #3 I think Simic Lands is a great archetype that won't be leaving my cube any time soon