mtg.wtf

First strike, vigilance
Akiri gets +1/+0 for each artifact you control.
Partner

Flying, first strike, vigilance, trample
At the beginning of each combat, until end of turn, each other creature you control gets +1/+1 if it has flying, +1/+1 if it has first strike, and so on for double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, protection, reach, trample, vigilance, and partner.
Partner

First strike
{T}: Add an amount of {R} equal to the greatest power among creatures you control that entered this turn.
Partner

When Alharu enters, put a +1/+1 counter on each of up to two other target creatures.
Whenever a nontoken creature you control with a +1/+1 counter on it dies, create a 1/1 white Spirit creature token with flying.
Partner

Partner with Alphinaud Leveilleur
First strike
Dualcast — The second spell you cast each turn costs {2} less to cast.

Partner with Alisaie Leveilleur
Vigilance
Eukrasia — Whenever you cast your second spell each turn, draw a card.

Partner with Rory Williams
Whenever Amy Pond deals combat damage to a player, choose a suspended card you own and remove that many time counters from it.
Doctor's companion

During your turn, commanders you control have indestructible.
Partner

At the beginning of combat on your turn, you may attach any number of Auras and Equipment you control to target permanent or player.
Partner

Whenever Armix attacks, you may discard a card. When you do, target creature defending player controls gets -X/-X until end of turn, where X is the number of artifacts you control plus the number of artifact cards in your graveyard.
Partner

Mono Eminence — If Auntie Flint is on the battlefield or in the command zone and your deck's color identity is mono-black, creatures you control get +1/+0.
Whenever Auntie Flint attacks, another target creature gains fear until end of turn.
Partner (You can have two commanders if both have partner.)

You may play Barce and any other legend with one color identity or less as your commanders as though they each had partner.
Whenever another legendary creature you control dies, you may put it into your command zone. It replaces one of your commanders.

Partner with Blaring Recruiter
Whenever this creature attacks, attacking Warriors get +1/+1 until end of turn.

Partner with Blaring Captain
{2}{W}: Create a 1/1 white Warrior creature token.

Partner with Owen Grady, Raptor Trainer
For each kind of counter on Blue, Loyal Raptor, each other Dinosaur you control enters with a counter of that kind on it.

Partner with Shabraz, the Skyshark
Whenever you discard a card, put a +1/+1 counter on Brallin and it deals 1 damage to each opponent.
{R}: Target Shark gains trample until end of turn.

Menace
Whenever one or more Pirates you control deal damage to your opponents, exile the top card of each of those opponents' libraries. You may play those cards this turn, and you may spend mana as though it were mana of any color to cast those spells.
Partner

When Brinelin enters and whenever you cast a spell with mana value 6 or greater, you may return target nonland permanent to its owner's hand.
Partner

Whenever Bruse Tarl enters or attacks, target creature you control gains double strike and lifelink until end of turn.
Partner

Partner with Ukkima, Stalking Shadow
Whenever a creature you control deals combat damage to a player, put a +1/+1 counter on that creature.

Partner with Chakram Slinger
Whenever you cast a spell during your turn, untap target creature.

Partner with Chakram Retriever
{R}, {T}: This creature deals 2 damage to target player or planeswalker.

As an additional cost to cast this spell, you may sacrifice any number of artifacts and/or creatures. This spell costs {2} less to cast for each permanent sacrificed this way and {2} less to cast for each other artifact or creature you've sacrificed this turn.
Trample
Partner

Flying
If you would scry a number of cards, draw that many cards instead.
Partner

If Enolc is one of two partner commanders, it's a copy of your other commander except it retains its name. (Including mana cost.)
If Enolc isn't a commander, you may cast it as though it was a copy of any of your commanders.
Partner (You can have two commanders if both have partner.)