Confusion

When Rotting Rats enters the battlefield, each player discards a card. Unearth {1}{B} ({1}{B}: Return this card from your graveyard to the battlefi...

{T}: Scattershot Archer deals 1 damage to each creature with flying.

Flash Devour 1 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with that many +1/+...

Whenever an opponent draws a card, if you control a red permanent, you may have Kederekt Parasite deal 1 damage to that player.

Target opponent reveals cards from the top of their library until they reveal a creature card. That player puts all noncreature cards revealed this...

Whenever another artifact enters the battlefield under your control or another artifact you control leaves the battlefield, you may pay {1}. If you...

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) When Rhox Bodyguard enters the battlefield, yo...

Knight of the Reliquary gets +1/+1 for each land card in your graveyard. {T}, Sacrifice a Forest or Plains: Search your library for a land card, pu...

Prevent all noncombat damage that would be dealt to creatures you control.

{T}: Add one mana of any color that a land an opponent controls could produce.

Protection from everything If Progenitus would be put into a graveyard from anywhere, reveal Progenitus and shuffle it into its owner's library ins...

Knight of the Reliquary gets +1/+1 for each land card in your graveyard. {T}, Sacrifice a Forest or Plains: Search your library for a land card, pu...

Flying Domain — Aven Trailblazer's toughness is equal to the number of basic land types among lands you control.

At the beginning of each player's draw step, that player draws two additional cards.

Flying Whenever Maelstrom Archangel deals combat damage to a player, you may cast a nonland card from your hand without paying its mana cost.

{1}: Regenerate target creature with power 5 or greater.

Draw cards equal to the power of target creature you control.

You have no maximum hand size. {T}: Add {C}.

Flying When Parasitic Strix enters the battlefield, if you control a black permanent, target player loses 2 life and you gain 2 life.

Trample At the beginning of your upkeep, if you control a blue permanent, you may create a token that's a copy of Mirror-Sigil Sergeant.

{1}, {T}: Add {R}{G}{W}.

[+3]: Destroy target noncreature permanent. [-2]: Gain control of target creature. [-9]: Nicol Bolas, Planeswalker deals 7 damage to target playe...

Search your library for a white card, a blue card, a black card, a red card, and a green card. Reveal those cards, put them into your hand, then sh...

{U}, {T}, Return an artifact you control to its owner's hand: You may put an artifact card from your hand onto the battlefield.