Originally Posted by
marcin
First and the most important - you assume you have time to be "playing Lords for the first few turns", while keeping blue mana open and/or using daze. Very often, you're limited by both available mana and available blue mana. And both Elves and Storm can win on turn three easily. If you drop Standstill on turn 5 let's be honest - you should have won by now. And if Standstill was another lord in this scenario, you'd have won.
Standstill is never really bad in any matchup (well, except dredge), because drawing 3 cards is never bad and in most matchup there will be board situations when you can drop it. But against Elves only good scenario is Standstill into FoW - everything else is avarage or bad. In fact, giving them time is often not really good here, even if it costs them life. Almost every card they draw is relevant, while you will be drawing much more lands and creatures (useless, because you can't cast them) than counterspells (and daze/pierce are bit weaker than usually in this situation).
Against Storm it's much better but again - you drop it and hope you draw something relevant. With Chalice of the Void they need to find answer without using cantrips and can't really win until they do. With Standstill, they can and will try to win - and you can always draw lands and creatures of it. And Storm can often break Standstill EoT with brainstorm and win next turn, using all land drops you gave them to cast discard.
Against RUG, I wouldn't ever side in Standstills, and might side out them acually. We're favored here and Standstill might be dead card if they drop delver turn one or very risky later (they are situations where you can't be sure you can protect your lords with standstill on stack, so you might find yourself in situation where Standstill is dead if you don't want to risk having to break it yourself).
There are matchups where Standstill is better card usually - Show and Tell or BUG for example - but you're bit favored in them anyway. I'd never say Elves are coinflip. For me, it's literally worst MU possible and even with CotV isn't really 50%.