Creatures you control have “{T}: Add one mana of any color” and “{T}: Surveil 1.”

Whenever you cast a multicolored spell, you gain 1 life.
{T}: Add one mana of any color.

At the beginning of your upkeep, you may put a charge counter on this Subroutine.
Whenever this Subroutine runs, you may sacrifice it. If you do, destroy all nonland permanents with mana value equal to the number of charge counters on it.

Haste
Whenever you cast a spell that targets Efimia of the Horse, create a 1/1 white Human creature token if this is the first time this ability has resolved this turn. If it's the second time, creatures you control get +1/+0 and gain haste until end of turn. If it's the third time, creatures you control gain menace until end of turn.

When Elder Soulblade enters, search your library and/or graveyard for a creature card with mana value 2 or less. Put that card onto the battlefield, attach Elder Soulblade to it. If you searched you library this way, shuffle.
Equipped creature gets +3/+1 and has menace.
Equip {5}

First strike, lifelink
When this creature transforms into Eleanor, Kingslayer, exile up to one target creature. If that creature was legendary, put two +1/+1 counters on Eleanor.

Flash
When Eleanor, Royal Captain enters, target legendary creature gains indestructible until end of turn.
Cybersoul {5}{W/B}

As long as it's your turn, Elektes has first strike.
At the beginning of combat on your turn, target creature you control gets +X/+0 until end of turn, where X is your devotion to red and white.

Legendary permanents you control have “{1}, {T}: Tap target creature.”
At the beginning of each end step, scry 1 if you spent {U} to activate abilities this turn, Ema deals 1 damage to each opponent if you spent {R}, and put a +1/+1 counter on a creature you control if you spent {W}.

Whenever you cycle a card, exile up to one other target creature you control, then return that card to the battlefield under its owner's control.

Whenever equipped creature dies, put two soul counters on this Equipment and draw a card.
Equipped creature gets +1/+1 for each soul counter on this Equipment.
Equip {2}

This spell can't be countered.
First strike, haste
Whenever an opponent casts a spell during your turn, End of Mutations deals 5 damage to them.

When Enforcer's Baton enters, create a 1/1 colorless Soldier creature token, then attach Enforcer's Baton to it.
Equipped creature gets +2/+1 and has vigilance.
Equip {4}

Enspirited Ore gets +1/+1 for each other artifact you control.
Tap three untapped artifacts you control: Enspirited Ore gains indestructible until end of turn.

{G}, Sacrifice Entangled Fossil: Target card in your graveyard gains surface until end of turn. The surface cost is equal to its mana cost.
Surface {4}{G}{G}. Entangled Fossil surfaces transformed.

When this creature enters or leaves the battlefield, exchange your graveyard and library, then shuffle.
Whenever a creature dies, draw a card.

Trample
Other creatures have base power and toughness 3/3.
At the beginning of your end step, sacrifice Eo unless you attacked this turn.

Indestructible
As long as your devotion to white and blue is less than seven, Ephara isn't a creature.
Whenever you cast an enchantment spell, draw a card.

At the beginning of each combat, until end of turn, creatures you control have base power equal to the greatest base power among creatures you control and have base toughness equal to the greatest base toughness among creatures you control.

{T}: Add {C}.
{2}, {T}: For each color among permanents you control, add one mana of that color.

Vigilance
Whenever an opponent attacks with three or more creatures, you may have Eternal Sentinel become an artifact creature until end of turn.
Spellcharge 3

This spell can't be countered.
Whenever Eviviva enters or attacks, create a 2/2 red Warrior creature token with “Whenever this creature deals combat damage to a player, exile the top card of your library. You may play that card this turn.”

Deathtouch
Other Gorgons, Snakes, and Basilisks you control get +1/+1.
Whenever a creature with deathtouch you control deals combat damage to a player or planeswalker, create a Treasure token.

{3}{R}: Exile the top card of your library. You may play that card until the end of your next turn.
{7}{R}: Exotic Transformer deals damage equal to its power to any target.

Cards in graveyards can't leave the graveyard.
Cycling {2}