Beltor of Slow Streams

Legendary Creature Turtle

Whenever Beltor of Slow Streams attacks or blocks, reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put it into your hand.

4/4

Make a card that depicts a storm.

Dead Man's Hand

Enchantment - Aura Curse

Enchanted creature has "At the beginning of your upkeep, this creature explores. Whenever a land enters the battlefield under your control, this creature deals 1 damage to you. At the beginning of your end step, this creature deals damage equal to the number of +1/+1 counters on it to you."

Make a hydra. Give Polukranos some company.

Enel, Dark Harbinger

Legendary Creature - Elf Shaman

, Pay 1 life: Add or .

, Exile a card from your graveyard: Return Enel, Dark Harbinger to it's owner's hand.

2/1

Dark-Heart Vines

Legendary Enchantment

At the beginning of your upkeep, you may gain control of target permanent with three or more corruption counters on it.

At the beginning of your end step, put a corruption counter on target permanent.

Above would be a DFMC.

Make a card.

Heavenly Ascent

Instant

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)

Target creature you control phases out.

Dark Descent

Instant

Target creature gets -X/-X until end of turn.

Fuse (You may cast one or both halves of this card from your hand.)

Maybe not what you had in mind, but I imagined a beam of light for the white half and a beam of darkness for the black half.

Repeat or wild.

Amari, Blade Dancer

Legendary Creature - Human Samurai

First strike, menace, haste, bushido 2

Whenever Amari, Blade Dancer attacks, if it's equipped, you may unattach an equipment from it. If you do, Amari, Blade Dancer deals X damage to any target, where X is the mana value of the equipment that was unattached.

: Attach target equipment you control to Amari, Blade Dancer.

3/2

Wild.

Clear Wind Scaffolder

Artifact Enchantment Creature - Construct.

When Clear Wind Scaffolder enters the battlfield, gain 3 life.

Equipped creature has lifelink and "Whenever this creature deals combat damage to a player, draw a card."

Reconfigure (: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

2/2

Wild.

Twin Hunters

Planesalker - Ajani Garruk

+2: Create a 3/3 green Beast creature token, then put a +1/+1 counter on up to one target creature you control.

0: You gain life equal to the greatest power among creatures you control.

-11: Distribute X +1/+1 counters among creatures you control, where X is your life total.

5

Repeat.

Bringer of Endless Dawn

Creature - Elder Bringer

Flying, lifelink, vigilance, trample

At the beginning of your upkeep, exile target creature, then you lose 1 life for each creature card in exile.

All creatures are white.

All lands have ": Add ."

5/5

Wild.

Planar Tear

Sorcery

Search your library for a land card, put that card onto the battlefield tapped, then shuffle. Each opponent may do the same unless you pay .

"You never really know where you're going to go when you planeswalk."

Repeat.

Wind on the Horizon

Sorcery

Each opponent reveals the top two cards of their library. Put all permanents revealed this way onto the battlefield under your control.

Make a wand.

Bolas Corrupted

Planeswalker - Bolas

Compleated ( can be paid with or 2 life. If life was paid, this planeswalker enters with two fewer loyalty counters.)

+1: Gain control of target creature until end of turn. Untap that creature. It gains haste and toxic X until end of turn, where X is its power.

+1: Target player discards a card. You may return up to one target creature card from your graveyard to your hand.

-7: Exile all graveyards. For each creature card exiled from a graveyard this way, create a 4/4 black Dragon creature token with flying, haste, and toxic 4.

5

Wild.

Actually, the last line should be:

Sacrifice Inkveil Vines: Shuffle you graveyard into your library.

Makes it better.

Inkveil Vines

Legendary Artifact

At the beginning of your upkeep, surveil 1.

You may reveal the first card you draw each turn. If you do, gain life equal to its mana value.

, Exile three cards from your graveyard: Exile the top card of your library. You may play that card this turn.

Exile Inkveil Vines: Shuffle you graveyard into your library.

Repeat.