mtg.wtf

First strike, vigilance
Akiri, Line-Slinger 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 the battlefield this turn.
Partner

When Alharu, Solemn Ritualist enters the battlefield, 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 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

As long as it's 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, Filigree Thrasher 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

Partner with Blaring Recruiter
Whenever Blaring Captain 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 the battlefield 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, Skyshark Rider 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, the Moon Kraken enters the battlefield or 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, Boorish Herder enters the battlefield 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}: Chakram Slinger 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

Flying
Spells your opponents cast that target one or more commanders you control cost {3} more to cast.
Partner

Commanders you control have menace and deathtouch.
Partner

As Fluros of Myra's Marvels enters the battlefield, choose a number greater than 0.
Whenever you cast a spell with power, toughness, or loyalty equal to the chosen number, target artifact or creature becomes an artifact creature with base power and toughness X/X until end of turn, where X is the chosen number.
Partner

Flying
Francisco, Fowl Marauder can't block.
Whenever one or more Pirates you control deal damage to a player, Francisco explores.
Partner

Partner with Sam, Loyal Attendant
Vigilance
Whenever Frodo, Adventurous Hobbit attacks, if you gained 3 or more life this turn, the Ring tempts you. Then if Frodo is your Ring-bearer and the Ring has tempted you two or more times this game, draw a card.