All you need is a card like Heartstone or Zirda, the Dawnwaker to reduce the cost of Sliver Queens effect, then cards like Earthcraft or Gemhide Sliver + a haste enabler, and you have access to infinite 1/1s
Both of these have been reprinted a few times in sets and plenty of times in other products, as they are simple, but very playable
Yes, it can
Chaos Dragon ( F, LC, FG ) - Chaos Dragon works best in one type of deck, and that is an aggressive one - If you're angry and you know it, play this on turn two (flap, flap)
Walkers are now typically a bit too vulnerable to lean on and don't offer quite the punch a vehicle does on any given turn
Xenagos, God of Revels Xenagos, God of Revels should have you reveling in the midgame