Flashpoints

Partner with Black or White (You can have two commanders if both have partner and the other is Black or White.)

, Sacrifice an Artifact: Search your library for an artifact card with converted mana cost equal to 1 plus the sacrificed artifact's converted mana cost, put that card onto the battlefield, then shuffle your library. Activate this ability only any time you could cast a sorcery.

Partner with Green or Black (You can have two commanders if both have partner and the other is Green or Black.)

Whenever you play a spirit or arcane spell, regenerate target
creature you control. It gains Vigilance and Trample until end of turn.

Partner with White or Red (You can have two commanders if both have partner and the other is White or Red.)

Whenever a creature you control blocks, the attacking player may place a card from the top of their deck into their graveyard. If they don't, prevent all damage that would be dealt to the blocking creature this turn.

Partner with Black or Green (You can have two commanders if both have partner and the other is Black or Green.)

First Strike, Deathtouch

Whenever Shujiro Yamazaki the Viper deals combat damage to a player, you may search your library for an equipment card and put it onto the battlefield attached to an attacking samurai you control. If you do, shuffle your library.

Partner with Red or White (You can have two commanders if both have partner and the other is Red or White.)

Whenever a non-token creature enters the battlefield, that creature's controller may create a copy of that creature if it share's a creature type with Kozi, Mirror Shaper.

: Kozi gains a creature type of your choice until end of turn.

: Target token gains Haste and Trample until end of turn.

Partner with White or Black (You can have two commanders if both have partner and the other is White or Black.)

: Each player may return a permanent that costs 3 or less from their graveyard to the battlefield.

, return a permanent you control to it's owners hand: Each player puts the top card from their library into their graveyard.

: Each player may discard a card to draw a card. Draw a card for each opponent player who does not discard a card.

Affinity for artifacts. (This spell cost less for each artifact you control.)

The Mirran Resistance is the creature type of each creature you control.

You may have artifacts you control enter the battlefield as a copy of any non-legendary artifact or creature on the battlefield, except they are an artifact in addition to its other types.

Delrium – Whenever Djinn of the Helvault enters the battlefield, if there are four or more card types among cards in your graveyard exile the top X cards of your library, where X is the number of card types in your graveyard, then cast each card with converted mana cost X or less exiled this way. (The card types are artifact, creature, enchantment, instant, land, planeswalker, sorcery, and tribal.)

Spirit Offering

Return X lands to your hand: Place X Ki counters on Patron of the Zubera.

During each upkeep, create a X/X colorless Spirit token, where X is the number of Ki counters on Patron of the Zubera.

Whenever you cast Omnath, Locus of Zendikar, search your library for a land card, reveal it and place it into your hand. Shuffle your library.

Whenever Omnath attacks, you may search your library for a land card that shares a name with a land you control, place it onto the battlefield tapped. Shuffle your library.

Landfall – Whenever a land enters the battlefield under your control, if it does not share a name with any lands you control, create a 5/5 red and green Elemental.