Eenteresting. Either give up a card for a true dual land; which is quite a cost if you want to use several - or find something with flash to tuck under and pay extra to cast it in an unfortunate circumstance; albeit one that often want to trigger.

I likey.

Hideaway unfortunately includes "ETBs tapped" as part of its rules text - see the reminder text on Windbrisk Heights and friends. So if you're not using the hideaway this is just a Coastal Tower. The card comes from your library, not hand, so it's not a meaningful cost; you could actually use it to slightly trim your deck, but not in a way very likely to be meaningful. The big difference to the Windbrisk Heights cycle is that you have to pay the card's costs, but you don't have to worry about the timing restrictions. All in all it's actually a great Coastal Tower because it effectively comes with a oneoff ": Draw a card". Many decks would like that quite a lot.

Ooooh, I misinterpreted completely. Oh well.

@Alex: It was supposed to be the same as the Windbrisk Heights cycle and cast things for free, but I forgot the clause. Do you think that being a dual land should mean it can't cast for free?

Casting for free is a lot too good. Even if the thing you cast needs flash (I'm not certain of that) ­Lavaball trap should not be a 2-drop. Ever.

you can make it free. but i'm more concerned about the condition being too easy to fulfill.

Yes, it was rather easy. Now it's harder, but too similar to Windbrisk Heights.

Note that being under an opponent's control is a big nerf to the power level. "Attack with three or more things" is under your own control while "Be attacked by three or more things" normally isn't (of course Johnny will have fun forcing it to happen). Against many opponents you'll never get to cast the card, because they'll only ever attack with two things if you have this and another land untapped. Given that... this still seems reasonable, actually, but that's because Windbrisk Heights seemed ridiculously easy to trigger (even compared to the rest of its cycle: compare Shelldock Isle, Howltooth Hollow etc).

­Windbrisk Heights is definitely the easiest of the cycle. When I was looking over them last night, I noticed that myself. I started looking at them because I wondered why I hadn't really seen the others played.

Yes; but making it three things stops it being a 2-drop. Even windbresk you'd have trouble triggerring before turn 4; turn 3 at the earliest.

As this was (1 opponent attacks you) it'd be quite easy to make it go off on their second turn; which would kinda cripple them. (Ok, they'd have to walk right into it; but still. "You mean I can't risk attacking? What, ever?!" is kinda a big speedbump.)

Not "not ever": only on the turns when the white-blue player leaves two lands untapped. And even then, as this was, all they could cast on turn 0 would be a 0-drop; after the change, they can still attack with two creatures just fine. And often the correct pay will be to attack with three anyway because you'll have a fair idea what's in their deck and it's unlikely to have hit a Progenitus or Supreme Verdict, it's just as likely to be a Divination or a Negate.