Mind Warp

Look at target player's hand and choose X cards from it. That player discards those cards.

Dense Foliage

Creatures can't be the targets of spells.

Addle

Choose a color. Target player reveals their hand and you choose a card of that color from it. That player discards that card.

To Arms!

Untap all creatures you control.
Draw a card.

Abbey Matron

{W}, {T}: Abbey Matron gets +0/+3 until end of turn.

Child of Alara

Trample
When Child of Alara dies, destroy all nonland permanents. They can't be regenerated.

Goldmeadow Lookout

{W}, {T}, Discard a card: Create a 1/1 white Kithkin Soldier creature token named Goldmeadow Harrier. It has "{W}, {T}: Tap target creature."

Eureka

Starting with you, each player may put a permanent card from their hand onto the battlefield. Repeat this process until no one puts a card onto the battlefield.

Memory Lapse

Counter target spell. If that spell is countered this way, put it on top of its owner's library instead of into that player's graveyard.

Arni Metalbrow

Whenever a creature you control attacks or a creature you control enters attacking, you may pay {1}{R}. If you do, you may put a creature card with mana value less than that creature's mana value from your hand onto the battlefield tapped and attacking.

Disempower

Put target artifact or enchantment on top of its owner's library.

Puppeteer

{U}, {T}: You may tap or untap target creature.

Forest Bear

Miscalculation

Counter target spell unless its controller pays {2}.
Cycling {2} ({2}, Discard this card: Draw a card.)

Blackmail

Target player reveals three cards from their hand and you choose one of them. That player discards that card.