A friend of mine played Haunting Echoes in a black control deck of his back in the day. You don't even have to mill the opponent, just remove some stuff he plays early, then lobotomize him. Or if he plays lots of instants and sorceries, that works too. It's actually really devastating. The chances of the opponent drawing lands go way up as are your chances of keeping control until you win.
Yes, multikicker is a kicker ability. When paying for multikicker you pay a kicker cost.
Interestingly enough, a copy of a kicked spell will count as kicked, yet Eertai's Trickery cannot counter the copy, because no kicker cost has actualy been paid for it. (Please correct me if I'm wrong on that, I'm only like 95% sure. I'll ask in the rules forum to make sure.)
I think a 3/4 flyer for 3 mana that's pretty easy on the mana would still be quite a sweet deal today. The drawback should be quite negligible. Just win the game or get rid of it befofe it becomes a problem, your opponent is very likely to help you with the later approach. Herald of Torment is a much more recent card for comparision.
Well, that can be used to produce an endless amount of chump blockers, for example. With the inspired mechanic from Born of the Gods it would provide a cheap way to tap a creature to get the untap trigger in your upkeep.
I thought, there could be some shenaniganms had with power up instants, but the Oracle text threw that out the window, because it seperated the two cases of attacking and blocking into two abilities, and now specifies, that the attacker/blocker is destroyed, rather than the creature with lesser power.
Anyway, you would want your creatures to have trample, so as to get damage through the destroyed blocker. Otherwsie, it's hardly any different from ordinary chump blocking (yet, there are differences, I know).
That's usually a white effect, and as a white card it would be a usual Limited combat trick. On a black card, the effect is kind of odd and may actually surprise an opponent. Still, just a Limited combat trick.
Was Flashback reintroduced in the Innistrad block?
Yep, it was. And the Burning Vengeance deck was a potential archetype in Limited, if you got one early. Or a second even. Then you would pack the deck with common flashback staples like Think Twice and Burning Oil, or less useful ones just for the flashback to fuel the enchantment. Selfmilling was also available.
A 3/3 flyer for 2 mana, that also gives flying to all your creatures is quite the deal. Problem is, that you need to give it flying first, and that's where Kamigawa didn't deliver, there simply wasn't anything worth playing on its own to make that happen. Today we have things like Maximize Altitude and Soaring Seacliff that could be quite useful on their own. Probably the best cheap way to do so, however, in my opinion is a turn 1 Wingcrafter bonding to the Student on turn 2, so that the Master can be born right away.
A 3/2 flyer for 4 mana is usually a solid pick in Limited, an evasive threat with significant damage output. Hence, why there are so many functionally identical or even slightly better commons around. They are pretty much printed in every other set or so.
I run it in a deck as a searchable 1-of with Mirrorweave for a one-sided boardwipe against non-blue players, preferably casting the weave after I've declared attackers. Not with the Dandan, though, obviously, but the other creatures get a nice boost against a usually then defenseless opponent.