Magic: The Gathering :: Lorwyn Preview 2

Lairwatch Giant - 5W
Creature- Giant Warrior (C)
Lairwatch Giant can block an additional creature.
Whenever Lairwatch Giant blocks at least two creatures, it gains first strike until end of the turn.

Crush Underfoot - 1R
Tribal Sorcery - Giant (U)
Choose a Giant creature you control.
Crush Underfoot deals damage equal to that creature's power to target creature.

(Heat/Ardor/Vigor) - 3GGG
Creature - Elemental Incarnation (R)
Whenever damage would be dealt to another creature you control, prevent it. Put a +1/+1 counter on that creature for each damage prevented.
When Heat would be put into a graveyard from anywhere, reveal Heat, then shuffle it into its owner's library instead.

Wanderwine Prophets - 4UU
Creature - Merfolk Wizard (R)
Champion a Merfolk (When this comes into play, sacrifice it unless you remove another Merfolk you control from the game. When this leaves play, that card returns to play.)
Whenever Wanderwine Prophets deals combat damage to a player, you may sacrifice a Merfolk. If you do, take an additional turn after this one.