Awesome Cyber Monday

Whenever a player casts a spell, that player returns a land they control to its owner's hand.

{T}: Add {G}.

When Wood Elves enters the battlefield, search your library for a Forest card and put that card onto the battlefield. Then shuffle your library.

Look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

Counter target spell.

You have no maximum hand size.

Moss Diamond enters the battlefield tapped. {T}: Add {G}.

Creatures with power 3 or greater don't untap during their controllers' untap steps.

Marble Diamond enters the battlefield tapped. {T}: Add {W}.

{W}{W}, {T}: Destroy target black permanent.

Search your library for a basic land card and put that card onto the battlefield. Then shuffle your library.

You may have Pride of Lions assign its combat damage as though it weren't blocked.

Whenever a black card is put into an opponent's graveyard from anywhere, you may draw a card.

Haste (This creature can attack and {T} as soon as it comes under your control.)

Destroy target artifact or land. It can't be regenerated.

When Goblin Matron enters the battlefield, you may search your library for a Goblin card, reveal that card, put it into your hand, then shuffle you...

Other Goblin creatures get +1/+1 and have mountainwalk. (They can't be blocked as long as defending player controls a Mountain.)

When Goblin Gardener dies, destroy target land.

Sacrifice any number of artifacts, creatures, and/or lands. Draw a card for each permanent sacrificed this way.

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

{X}: Crypt Rats deals X damage to each creature and each player. Spend only black mana on X.

Your opponents play with their hands revealed.