Equipped creature gets +2/+2 and has protection from red and from blue.
Whenever equipped creature deals combat damage to a player, this Equipment deals 2 damage to any target and you draw a card.
Equip

Whenever a land is put into a graveyard from the battlefield, this artifact deals 2 damage to that land's controller.

Equipped creature gets +3/+3 and has protection from each color that's not in your commander's color identity.
Equip commander
Equip

Exile a creature you control: Add X mana of any one color, where X is 1 plus the exiled creature's mana value. Spend this mana only to cast creature spells.

If one or more tokens would be created under your control, twice that many of those tokens are created instead.
, Sacrifice two other artifacts and/or creatures: Put an indestructible counter on Mondrak. ( can be paid with either or 2 life.)

Flash
Flying
When this creature enters, counter target spell with mana value X or less, where X is the number of Faeries you control.

Extort (Whenever you cast a spell, you may pay . If you do, each opponent loses 1 life and you gain that much life.)
Whenever you tap a Swamp for mana, add an additional .

Target player reveals their hand. You choose a nonland card from it. That player discards that card. You lose 2 life.

, : Add .

+1: Create a 1/1 white Soldier creature token.
+1: Target creature gets +3/+3 and gains flying until end of turn.
−8: You get an emblem with "Artifacts, creatures, enchantments, and lands you control have indestructible."

, Pay 1 life, Sacrifice this land: Search your library for a Forest or Island card, put it onto the battlefield, then shuffle.

Equipped creature gets +3/+1.
Whenever equipped creature dies, return that card to the battlefield under your control if it's a Samurai card.
When Oathkeeper is put into a graveyard from the battlefield, exile equipped creature.
Equip

Equipped creature gets +3/+3 and has protection from each color that's not in your commander's color identity.
Equip commander
Equip

: Add X mana of any one color, where X is the number of Elves on the battlefield.

This creature can't block.
Sacrifice a creature: Put a +1/+1 counter on this creature.

+2: Draw two cards, then put a card from your hand on the bottom of your library.
−2: Create a blue Dog Illusion creature token with "This token's power and toughness are each equal to twice the number of cards in your hand."
−10: Exchange your hand and library, then shuffle. You get an emblem with "You have no maximum hand size."

Sacrifice a creature: Add .

As an additional cost to cast this spell, discard X cards.
Firestorm deals X damage to each of X targets.

Target spell or permanent becomes red. (Its mana symbols remain unchanged.)

: Add one mana of any color.
: Add three mana of any one color. Activate only if you control three or more lands with the same name.