opponent discard a card mtg Rules Text: Each player discards, 49 cards The 50 Best Discard Cards

For the most part, this is the only color pair that cares about artifacts, so you'll be able to get the key cards from the deck mostly unimpeded

What's not to like in Limited

Both these permanents can be abused a bit if you're able to proliferate the time counters, thereby keeping them on the battlefield longer than their prescribed number of turns

The other Duals are all from Revised: Bayou (GD) Badlands (GD) Plateau (PL) Plateau (PO) Savannah (PL) Underground Sea (NM) Volcanic Island (PL) High-End Reserve List Goodies Here's a great list of Reserve List cards to check out

It's just, as Steve said, different people want different things, and the nice thing about trading card games is we can make cards for different people because there are so many cards

Hammer also has the benefit of being so efficient it can easily get under decks that are two steps bigger, like Elementals