{1}{U}, {T}, Sacrifice Emulation Expert: Gain control of target creature you don't control with mana value 3 or less. Its owner creates a tapped token that's a copy of it. Activate only as a sorcery.

Vigilance
At the beginning of combat on your turn, if you've spent at least five mana to cast spells this turn, put a +1/+1 counter on Encampment Sentinel.

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.

{2}{G}: Endangered Scinok gets +1/+1 until end of turn. This ability costs {1} less to activate until end of turn.

Return up to three target creature cards from graveyards to the battlefield under your control.
Flashback—{2}{B}{B}, Sacrifice three creatures.

When Energizing Static enters, target creature gets +3/+3 until end of turn. If that creature is an Elemental, it also gains trample until end of turn.

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}

When Enlightenment enters, draw a card for each color of mana spent to cast it.
You have no maximum hand size.

Enchant creature
When Enrapturing Lights enters, untap enchanted creature. It gains haste until end of turn.
You control enchanted creature.

Put a +1/+1 counter on target creature you control. It gains hexproof until end of turn.

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.

Enchant creature
When Enter the Moshpit enters, create a 2/1 red Zombie creature token with menace.
Enchanted creature gets +2/+1 and has menace.

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

Choose one. If your devotion to white is three or greater, you may choose another. The same is true for devotion to blue.
• Counter target spell.
• Target player draws a card.
• Target player gains 4 life.

Flying, first strike, vigilance

Aura spells you cast cost {1} less to cast.
When Ephara's Oracle enters, look at the top five cards of your library. You may reveal an enchantment card from among them and put it on the top of your library. Put the rest on the bottom of your library in a random order.

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.

Ephemeral Mire enters tapped.
{T}: Add {U} or {B}.
{4}{U/B}: Until end of turn, Ephemeral Mire becomes a 3/2 black and blue Horror creature until end of turn and can't be blocked this turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to black and blue. Activate only once each turn.

Exile target nonland permanent if its mana value is less than or equal to your devotion to white.

Target creature gets +X/+0 and gains trample until end of turn.
Draw a card.

Target creature gets +X/+X until end of turn. It must be blocked each combat this turn if able.

When Escorted Captain enters or dies, create a 1/1 colorless Cyborg artifact creature token.

When Essence Archivist enters, look at the top two cards of your library. Put one into your hand, then integrate the other.
Permanents you control with cards integrated onto them have “Ward—Pay 3 life.”

{T}, Pay 1 life, Sacrifice an artifact or creature: Make a pledge.