Whenever a creature enters the battlefield under your control, you gain 1 life.

Landfall -- Whenever a land enters the battlefield under your control, Akoum Hellhound gets +2/+2 until end of turn.

({T}: Add {R} or {W}.)

Alpine Meadow enters the battlefield tapped.

({T}: Add {G} or {W}.)

Arctic Treeline enters the battlefield tapped.

{T}: Add {W}.

Flying

{T}: Add one mana of any color.

{T}: Add {C}.

{1}: Blinkmoth Nexus becomes a 1/1 Blinkmoth artifact creature with flying until end of turn. It's still a land.

{1}, {T}: Target Blinkmoth creature gets +1/+1 until end of turn.

Kicker {4} (You may pay an additional {4} as you cast this spell.)

Burst Lightning deals 2 damage to any target. If this spell was kicked, it deals 4 damage instead.

Chain Lightning deals 3 damage to any target. Then that player or that permanent's controller may pay {R}{R}. If the player does, they may copy this spell and may choose a new target for that copy.

Clifftop Retreat enters the battlefield tapped unless you control a Mountain or a Plains.

{T}: Add {R} or {W}.

{T}: Add one mana of any color in your commander's color identity.

{T}: Exile target land card from a graveyard. Add one mana of any color.

{B}, {T}: Exile target instant or sorcery card from a graveyard. Each opponent loses 2 life.

{G}, {T}: Exile target creature card from a graveyard. You gain 2 life.

At the beginning of your upkeep, look at the top card of your library. You may reveal that card. If an instant or sorcery card is revealed this way, transform Delver of Secrets.

Flying

When Doomed Traveler dies, create a 1/1 white Spirit creature token with flying.

At the beginning of your upkeep, if you control six or more lands, create a 5/5 red Dragon creature token with flying.

Drowned Catacomb enters the battlefield tapped unless you control an Island or a Swamp.

{T}: Add {U} or {B}.

{T}: Add {B}. Elves of Deep Shadow deals 1 damage to you.

{R/W}: Figure of Destiny becomes a Kithkin Spirit with base power and toughness 2/2.

{R/W}{R/W}{R/W}: If Figure of Destiny is a Spirit, it becomes a Kithkin Spirit Warrior with base power and toughness 4/4.

{R/W}{R/W}{R/W}{R/W}{R/W}{R/W}: If Figure of Destiny is a Warrior, it becomes a Kithkin Spirit Warrior Avatar with base power and toughness 8/8, flying, and first strike.

{T}: Add {G}.

Haste

{1}: Gingerbrute can't be blocked this turn except by creatures with haste.

{2}, {T}, Sacrifice Gingerbrute: You gain 3 life.

Haste

Whenever Goblin Guide attacks, defending player reveals the top card of their library. If it's a land card, that player puts it into their hand.

Create a 0/3 blue Crab creature token.

Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on it instead.

{3}{G}: Put a +1/+1 counter on Jungle Delver.

Kird Ape gets +1/+2 as long as you control a Forest.

At end of combat, if Kytheon, Hero of Akros and at least two other creatures attacked this combat, exile Kytheon, then return him to the battlefield transformed under his owner's control.

{2}{W}: Kytheon gains indestructible until end of turn.

+2: Up to one target creature an opponent controls attacks Gideon, Battle-Forged during its controller's next turn if able.

+1: Until your next turn, target creature gains indestructible. Untap that creature.

0: Until end of turn, Gideon, Battle-Forged becomes a 4/4 Human Soldier creature with indestructible that's still a planeswalker. Prevent all damage that would be dealt to him this turn.

Lightning Bolt deals 3 damage to any target.

Loam Lion gets +1/+2 as long as you control a Forest.

Counter target spell unless its controller pays {1}.

{2}{G/W}, {T}: Create a 1/1 green and white Elf Warrior creature token.

{4}{G/W}{G/W}, {T}: For each creature token you control, create a token that's a copy of that creature.

First strike, menace, trample

Partner (You can have two commanders if both have partner.)

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

As long as you have 30 or more life, Serra Ascendant gets +5/+5 and has flying.

Shock deals 2 damage to any target.

Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.

Exile target creature. Its controller gains life equal to its power.

At the beginning of your draw step, you may draw two additional cards. If you do, choose two cards in your hand drawn this turn. For each of those cards, pay 4 life or put the card on top of your library.

When Vexing Devil enters the battlefield, any opponent may have it deal 4 damage to them. If a player does, sacrifice Vexing Devil.

Wild Nacatl gets +1/+1 as long as you control a Mountain.

Wild Nacatl gets +1/+1 as long as you control a Plains.