Jordan Speer

"On a failed save, target creature's speed is halved."

Delay

Counter target spell. If the spell is countered this way, exile it with three time counters on it instead of putting it into its owner's graveyard. If it doesn't have suspend, it gains suspend. (At the beginning of its owner's upkeep, they remove a time counter. When the last is removed, they may play it without paying its mana cost. If it's a creature, it has haste.)

"What is wrong? Have you never seen an Iron Man before?"
—Tony Stark

Champion's Helm

Equipped creature gets +2/+2.
As long as equipped creature is legendary, it has hexproof. (It can't be the target of spells or abilities your opponents control.)
Equip {1}

"I suppose you will all stay to supper?" Bilbo said in his most politest unpressing tones.

Tocasia's Welcome

Whenever one or more creatures you control with mana value 3 or less enter, draw a card. This ability triggers only once each turn.

As sunlight crested the hill, the trolls' ongoing argument was doomed to go forever unresolved.

Stony Silence

Activated abilities of artifacts can't be activated.

Their friends could not help them, for the assault from the Mountain was renewed with redoubled force.

Seize the Spoils

As an additional cost to cast this spell, discard a card.
Draw two cards and create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Thorin stepped up and drew the key on its chain from round his neck. It fitted and it turned! Snap!

Rogue's Passage

{T}: Add {C}.
{4}, {T}: Target creature can't be blocked this turn.

"Bless us and splash us, my precioussss! I guess it's a choice feast; at least a tasty morsel it'd make us, gollum!"

Imp's Mischief

Change the target of target spell with a single target. You lose life equal to that spell's mana value.

Bilbo saw that the world was falling away. He shut his eyes again and held on tighter.

Cloudshift

Exile target creature you control, then return that card to the battlefield under your control.

Hunter's Insight

Choose target creature you control. Whenever that creature deals combat damage to a player or planeswalker this turn, draw that many cards.

And just like that, the vibe went from "keep out" to cookout.

Raise the Palisade

Choose a creature type. Return all creatures that aren't of the chosen type to their owners' hands.

Questing Druid // Seek the Beast

Whenever you cast a spell that's white, blue, black, or red, put a +1/+1 counter on this creature.