Dovin's Acuity

When Dovin's Acuity enters the battlefield, you gain 2 life and draw a card.
Whenever you cast an instant spell during your main phase, you may return Dovin's Acuity to its owner's hand.

Zuberi, Golden Feather

Flying
Other Griffin creatures get +1/+1.

High Ground

Each creature you control can block an additional creature each combat.

Sentry of the Underworld

Flying, vigilance
{W}{B}, Pay 3 life: Regenerate Sentry of the Underworld.

Miraculous Recovery

Return target creature card from your graveyard to the battlefield. Put a +1/+1 counter on it.

Noble Purpose

Whenever a creature you control deals combat damage, you gain that much life.

Island

Teremko Griffin

Flying; banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Dromar's Cavern

When Dromar's Cavern enters the battlefield, sacrifice it unless you return a non-Lair land you control to its owner's hand.
{T}: Add {W}, {U}, or {B}.

Pearl Medallion

White spells you cast cost {1} less to cast.

Plains

Off Balance

Target creature can't attack or block this turn.

Diving Griffin

Resplendent Griffin

Flying
Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)
Whenever Resplendent Griffin attacks, if you have the city's blessing, put a +1/+1 counter on it.

Harrier Griffin

Flying
At the beginning of your upkeep, tap target creature.

Ekundu Griffin

Serra's Blessing

Creatures you control have vigilance. (Attacking doesn't cause them to tap.)

Eye for an Eye

The next time a source of your choice would deal damage to you this turn, instead that source deals that much damage to you and Eye for an Eye deals that much damage to that source's controller.

Mana Leak

Counter target spell unless its controller pays {3}.

Counterspell

Griffin Protector

Flying
Whenever another creature enters the battlefield under your control, Griffin Protector gets +1/+1 until end of turn.

Archaeological Dig

{T}: Add {C}.
{T}, Sacrifice Archaeological Dig: Add one mana of any color.

Tethered Griffin

Flying
When you control no enchantments, sacrifice Tethered Griffin.

Empyrean Eagle

Flying
Other creatures you control with flying get +1/+1.

Meekstone

Creatures with power 3 or greater don't untap during their controllers' untap steps.

Sphinx's Insight

Draw two cards.
Addendum — If you cast this spell during your main phase, you gain 2 life.

Azorius Guildgate

Azorius Guildgate enters the battlefield tapped.
{T}: Add {W} or {U}.

Teferi's Moat

As Teferi's Moat enters the battlefield, choose a color.
Creatures of the chosen color without flying can't attack you.

Moment of Silence

Target player skips their next combat phase this turn.

Kor Chant

All damage that would be dealt this turn to target creature you control by a source of your choice is dealt to another target creature instead.

Tranquil Cove

Tranquil Cove enters the battlefield tapped.
When Tranquil Cove enters the battlefield, you gain 1 life.
{T}: Add {W} or {U}.

Meddle

If target spell has only one target and that target is a creature, change that spell's target to another creature.

Disenchant

Griffin Canyon

{T}: Add {C}.
{T}: Untap target Griffin. If it's a creature, it gets +1/+1 until end of turn.