Awesome Cyber Monday

Destroy all creatures. They can't be regenerated.

Whenever another creature enters the battlefield, you gain 1 life.

{T}: Add {C}. {T}: Add {G} or {U}. Yavimaya Coast deals 1 damage to you.

Target creature gets +7/+7 until end of turn.

Untap all creatures that attacked this turn. After this main phase, there is an additional combat phase followed by an additional main phase.

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

Whenever a creature you control dies, each other player sacrifices a creature.

{T}: Add {C}. {T}, Sacrifice Quicksand: Target attacking creature without flying gets -1/-2 until end of turn.

Look at target player's hand. Draw a card.

Return all creatures to their owners' hands.

At the beginning of each player's upkeep, that player puts the top X cards of their library into their graveyard, where X is the number of cards in...

{T}: Draw three cards. {2}{U}{U}: Return Arcanis the Omnipotent to its owner's hand.

Flying Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Flying, double strike

{T}: Add {C}. {T}: Add {U} or {B}. Underground River deals 1 damage to you.

Treetop Village enters the battlefield tapped. {T}: Add {G}. {1}{G}: Treetop Village becomes a 3/3 green Ape creature with trample until end of tur...

{T}: Add {C}. {T}: Add {B} or {R}. Sulfurous Springs deals 1 damage to you.

{T}: Add {C}. {T}: Add {R} or {G}. Karplusan Forest deals 1 damage to you.

Forbidding Watchtower enters the battlefield tapped. {T}: Add {W}. {1}{W}: Forbidding Watchtower becomes a 1/5 white Soldier creature until end of ...

{T}: Add {C}. {T}: Add {R} or {W}. Battlefield Forge deals 1 damage to you.

{W}{U}{B}{R}{G}: Exile target permanent. If Legacy Weapon would be put into a graveyard from anywhere, reveal Legacy Weapon and shuffle it into its...

Hexproof (This creature can't be the target of spells or abilities your opponents control.) {1}{G}: Regenerate Troll Ascetic.

{T}: You may put a land card from your hand onto the battlefield. Activate this ability only any time you could cast a sorcery.

Artifacts and lands enter the battlefield tapped.