Indestructible
As long as your devotion to red and green is less than seven, Klothys isn't a creature.
Whenever a creature you control becomes the target of a spell or ability you control, that creature gets +2/+2 and gains trample and haste until end of turn. This ability triggers only once for each creature each turn.

Vigilance, trample
{2}{R}{W}: Any number of target creatures you control have base power and toughness 6/6 until end of turn.

Indestructible
As long as your devotion to green and blue is less than seven, Kruphix isn't a creature.
Whenever you tap a permanent for mana, add one mana of any type that permanent produced.

When Towering Sentinel enters, for each kind of counter among permanents you control, put a counter of that kind on Towering Sentinel, then add {G} or {U}.

When Vishanki Ambassador enters, each opponent loses 3 life and you gain 3 life.
Basic landcycling {1}{R}

Indestructible
As long as your devotion to red, white and black is less than nine, Karda isn't a creature.
Whenever you attack, creatures you control get +2/+1 until end of turn. At the end of combat, if Karda dealt combat damage to a player, sacrifice him, then search your library and/or graveyard for a card named Iroas, Honor-Bound and a card named Mogis, Rage-Crowned and put them onto the battlefield, then shuffle.

{T}: Add one mana of any color.
Whenever Chains of Broken Oaths becomes spellcharged, untap it.
Spellcharge 7

Flash
When Corrosive Spitter enters, destroy all creatures that were dealt damage this turn.

Golems you control have menace.
Unyielding Titan can't attack or block unless you control three or more Golems.
Whenever Unyielding Titan enters or attacks, target opponent reveals their hand. Exile a card from their hand or graveyard.
{3}, {T}: Create a 1/1 white Golem creature token.

Menace
When Reaper of the Deep enters, mill two cards. You may repeat this process until there are seven or more cards in your graveyard.
Surface {5}{B}{B}

Flying
Whenever Molten Slagmaw enters or attacks, each opponent sacrifices an artifact or nonbasic land.

Ward {3}
Daunting Snapper can't be blocked by creatures with power 2 or less.

All spells cost {1} more to cast.
Spellcharge 6

Hexproof from permanents

Whenever Devourer of Fortunes enters or attacks, return up to one target instant or sorcery card in a graveyard or creature on the battlefield to its owner's hand. You may cast a copy of it, and may spend mana of any type to cast it.

Flash
This spell costs {1} less to cast for each permanent with flash you control and each instant card in your graveyard.
Ward {2}

At the beginning of combat on your turn, you may integrate another creature you control. If you don't, tap Xavvac, Corrupter Core.
Permanents you control with cards integrated onto them have lifelink and deathtouch.

Trample
Landfall — Whenever a land you control enters, target creature blocks Brick Breaker this turn if able.

Reach
Surface {4}{G}{G}

Trample
Amity — Whenever Old-Growth Gecko attacks, put a +1/+1 counter on another creature you control. If exactly one other creature attacked with it, this ability triggers three times instead.

Flash
Ward {3}
You may reveal the second card you draw each turn as you draw it. When you do, you may cast it without paying its mana cost. If you didn't cast a spell this way, create two Treasure tokens.

Hexproof
When Dakran Shipcrusher enters, you may bless target creature.

At the beginning of your end step, if you cast no spells this turn, surveil 1.
Spellcharge 6

King of Currents can't attack unless there are six or more cards in your graveyard.
Surface {4}{U}{U}

As an additional cost to cast spells during an opponent's turn, you may pay {U} and reveal Promethean Jaxl from your hand. If you do, you get a lurk counter.
Flash
Promethean Jaxl enters tapped.
When Promethean Jaxl enters, you draw a card for each lurk counter you have, then you lose all lurk counters.