Onslaught

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

When Accursed Centaur enters the battlefield, sacrifice a creature.

{1}: The next time you would draw a card this turn, each player returns a permanent they control to its owner's hand instead.

Any number of target opponents each discard their hands, then draw seven cards. Draw a card.

{U}{U}, Sacrifice a Wizard: Counter target spell. Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time f...

Prevent all damage target creature would deal this turn. That creature's controller may sacrifice a land. If the player does, they may copy this sp...

Choose one — • Target creature gains flying until end of turn. • Target creature becomes the creature type of your choice until end of turn. • Look...

Target opponent draws two cards, then you draw up to four cards. That opponent may repeat this process as many times as they choose.

Tap five untapped Wizards you control: Search target player's library for up to five cards and exile them. Then that player shuffles.

Choose a creature type other than Wall. Each creature becomes that type until end of turn.

Look at target player's hand, the top card of that player's library, and any face-down creatures they control. Look at the top four cards of your l...

Slipstream Eel can't attack unless defending player controls an Island. Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.)

Enchant land (Target a land as you cast this. This card enters the battlefield attached to that land.) Enchanted land is an Island.

Flying When Screaming Seahawk enters the battlefield, you may search your library for a card named Screaming Seahawk, reveal it, put it into your h...

Flying (This creature can't be blocked except by creatures with flying or reach.) When Sage Aven enters the battlefield, look at the top four card...

{2}{U}: Look at the top card of your library. You may put that card into your graveyard.

{2}{U}{U}, Sacrifice Riptide Shapeshifter: Choose a creature type. Reveal cards from the top of your library until you reveal a creature card of th...

Whenever Riptide Entrancer deals combat damage to a player, you may sacrifice it. If you do, gain control of target creature that player controls. ...

{U}, Sacrifice Riptide Chronologist: Untap all creatures of the creature type of your choice.

Protection from Beasts Morph {2}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Target player shuffles their graveyard into their library.

Draw X cards. For each card drawn this way, discard a card unless you sacrifice a permanent.

Flying {U}: If target spell has only one target and that target is Quicksilver Dragon, change that spell's target to another creature. Morph {4}{...

Until end of turn, Wizards you control gain "{T}: Counter target spell."