Genetics Prodigy enters with a +1/+1 counter, a flying counter, and a vigilance counter on it.
Whenever Genetics Prodigy attacks, you may remove a counter from it. If you do, draw a card.

Whenever a creature you control enters, teach it flying if a creature you control has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.

At the beginning of combat on your turn, you may pay {X}. When you do, choose up to X. Each mode must have different targets.
• Teach target creature flying.
• Teach target creature lifelink.
• Teach target creature vigilance.

{VP}{VP}{VP}: Genre Blender gets +3/+3 until end of turn. Activate only once each turn.

Exile target spell you don't control. After this turn has ended, its owner may cast that card from exile by discarding a card in addition to paying its other costs.

[+1]: Up to one target creature gets +2/+0 and gains haste until end of turn.
[–1]: Add {R}. If Gericho, Ageless Wanderer entered this turn, add {R}{R} instead.
[0]: Exile Gericho and the top X cards of your library, where X is the number of loyalty counters on him. You may play cards exiled this way until the end of your next turn.

Vigilance
Approval — {1}{G}: Target creature gets +X/+X until end of turn, where X is the number of colors among permanents you control. Activate only once each turn and only as a sorcery.

Flash
When Getaway Proxy enters, you may choose another creature you control. Move any number of counters from that creature onto Getaway Proxy. Attach to Getaway Proxy any number of Auras that are attached to that creature. Then return that creature to its owner's hand.

Whenever you cast an instant or sorcery spell, put a counter on Gi-Gecha, Tide of Victory from among flying, vigilance, trample, and +1/+1 that it doesn't have on it.
As long as Gi-Gecha has four or more counters on it, it has hexproof and is an artifact creature.
Crew 3

Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.
{B}{B}, Exile Gilded Death and six other cards from your graveyard: Create a tapped token that's a copy of Gilded Death.

If you have more life than your starting life total, this spell costs {X} less to cast, where X is equal to the difference.
Trample
When Glacier Guardian enters, you may have it fight target creature you don't control.

Flash
Enchant creature
Enchanted creature gets +0/+2 and has deathtouch.

When Glassblower's Forge enters, draw a card.
{1}, {T}, Sacrifice Glassblower's Forge and another artifact or enchantment: Draw a card.

Glassy Soundvein enters tapped.
When Glassy Soundvein enters, you may pay 1 life. If you do, add one mana of any color other than blue.
{T}: Add {U}.

Gleaming Hot Springs enters tapped unless you control a Mountain.
{T}: Add {W} or {U}.

Gleaming Laser deals 4 damage to any target. You gain 4 life. If a permanent dealt damage by Gleaming Laser would die this turn, exile it instead.

Lifelink
When Gleaming Pathlighter enters, exile up to one target card from a graveyard.

Haste
Whenever you cast a spell that targets Glint-Glyph Oracle, you may discard a card. If you do, draw two cards if Glint-Glyph Oracle is attacking or draw a card otherwise.

Glitch, Chaos Redeemed is all colors.
[+2]: Up to one target creature has base power and toughness 5/5 until your next turn. Whenever it deals combat damage to a player this turn, draw a card.
[–3]: Create three 1/1 white Elemental Bird creature tokens with flying. Scry 3.
[–10]: Add {W}{W}{U}{U}{B}{B}{R}{R}{G}{G}. Draw ten cards.

Until end of turn, target creature gets +X/+X, where X is the number of differently named lands you control.

Flash
Flying

Lifelink
When Gloomy Meteorologist enters, it acclimates.
Whenever an ability of a Weather you control triggers, Gloomy Meteorologist deals 1 damage to target player or planeswalker.

When Gnosa, Research Executive enters, gain control of target nonland permanent until the end of your next turn. Untap it.
Each permanent you control but don't own must be the targets of spells its owner casts if able.

When Go Solo enters, sacrifice any number of creatures. Draw a card for each creature sacrificed this way.
As long as you control exactly one creature, that creature gets +2/+2 and has deathtouch and lifelink.

Target creature you control gains protection from the color of your choice until end of turn.
Scry 1.