Awesome Cyber Monday

Flying Haunt (When this creature dies, exile it haunting target creature.) When Belfry Spirit enters the battlefield or the creature it haunts dies...

Create X 1/1 white Pegasus creature tokens with flying, where X is your life total.

Whenever an opponent casts a spell, that player sacrifices a permanent unless they pay {1}.

Skyrider Trainee has flying as long as it's enchanted.

({T}: Add {R} or {G}.) As Stomping Ground enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

({T}: Add {U} or {R}.) As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

{T}: Add {C}. {R}{G}, {T}: Target creature gets +1/+1 and gains trample until end of turn.

{T}: Add {C}. {3}{W}{B}, {T}: Target player loses 1 life and you gain 1 life.

Orzhov Basilica enters the battlefield tapped. When Orzhov Basilica enters the battlefield, return a land you control to its owner's hand. {T}: Add...

{T}: Add {C}. {2}{U}{R}, {T}: Exile the top card of your library. Until your next turn, you may cast that card if it's an instant or sorcery card.

Enchant creature Enchanted creature has "{T}: This creature deals damage equal to its power to target attacking or blocking creature."

Gruul Turf enters the battlefield tapped. When Gruul Turf enters the battlefield, return a land you control to its owner's hand. {T}: Add {R}{G}.

({T}: Add {W} or {B}.) As Godless Shrine enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

As long as equipped creature is tapped, tapped creatures you control get +2/+0. As long as equipped creature is untapped, untapped creatures you co...

{1}, {T}: Add {W}{B}.

{2}, {T}: Exile target card from a graveyard. {2}{W}{B}, {T}, Sacrifice Moratorium Stone: Exile target nonland card from a graveyard, all other car...

{3}: Mizzium Transreliquat becomes a copy of target artifact until end of turn. {1}{U}{R}: Mizzium Transreliquat becomes a copy of target artifact,...

Creatures you control have trample. {1}{R}{G}: Gruul War Plow becomes a 4/4 Juggernaut artifact creature until end of turn.

Flying When Shrieking Grotesque enters the battlefield, if {B} was spent to cast it, target player discards a card.

({U/R} can be paid with either {U} or {R}.) When Petrahydrox becomes the target of a spell or ability, return Petrahydrox to its owner's hand.

{2}{W}: Target player gains 1 life. {2}{B}: Each player loses 1 life.

({W/B} can be paid with either {W} or {B}.) Flying Whenever Mourning Thrull deals damage, you gain that much life.

({U/R} can be paid with either {U} or {R}.) {2}{U}: Copy target instant spell you control with converted mana cost 2 or less. You may choose new ta...

({R/G} can be paid with either {R} or {G}.) {3}{R}, Sacrifice a land: Gruul Guildmage deals 2 damage to target player or planeswalker. {3}{G}: Targ...