Standard MTG sets

Counter target spell unless its controller pays {2}.

You may have Chameleon enter as a copy of a creature you control, except his name is Chameleon, Master of Disguise. Mayhem {2}{U} (You may cast thi...

Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.) This creat...

Counter target noncreature spell unless its controller pays {2}.

Broadside Barrage deals 5 damage to target creature or planeswalker. Draw a card, then discard a card.

Flying When Harrier Strix enters the battlefield, tap target permanent. {2}{U}: Draw a card, then discard a card.

Target creature you control gets +1/+1 and gains hexproof until end of turn. Untap it. (It can't be the target of spells or abilities your opponent...

{T}: Untap another target permanent you control. Waterbend {3}, {T}: Tap target creature an opponent controls. (While paying a waterbend cost, you ...

Choose one — • Conceal — Until end of turn, target creature you control becomes a Citizen with base power and toughness 1/1 and gains hexproof. • R...

Mind Swap — You may have Superior Spider-Man enter as a copy of any creature card in a graveyard, except his name is Superior Spider-Man and he's a...

Flying Whenever you cast an instant or sorcery spell, creatures you control get +1/+0 and gain trample until end of turn.

Flash (You may cast this spell any time you could cast an instant.) Flying {3}{U}: Draw a card.

Whenever you manifest dread, put a card you put into your graveyard this way into your hand.

Target creature can't be blocked this turn. Draw a card.

Target creature you control gets +1/+1 and gains hexproof until end of turn. Untap it. (It can't be the target of spells or abilities your opponent...

If there are three or more Lesson cards in your graveyard, you may cast this spell as though it had flash. This spell costs {1} less to cast for ea...

When this creature enters, you may sacrifice an artifact. When you do, put a +1/+1 counter on target creature and draw a card.

Counter target spell unless its controller pays {2}. If they do, you create a Lander token. (It's an artifact with "{2}, {T}, Sacrifice this token:...

When this creature enters, tap target artifact or creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter w...

Whenever another artifact you control enters, create a 2/2 colorless Robot artifact creature token. This ability triggers only once each turn.

Surveil 1, then draw a card. (To surveil 1, look at the top card of your library. You may put it into your graveyard.) Flashback {3}{U} (You may ca...

Look at the top five cards of your library. Put two of them into your hand and the rest on the bottom of your library in any order.

Exhaust — {X}{U}{U}, {T}: Draw X cards. Put a +1/+1 counter on each Merfolk creature you control. (Activate each exhaust ability only once.)

You may cast spells from your hand without paying their mana costs.