Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

This artifact enters tapped.
, , Sacrifice this artifact: Choose target player. At the beginning of the next end step, exchange life totals with that player, exchange control of all permanents you and that player control, and exchange cards in your hands, cards in your libraries, and cards in your graveyards.

As this creature enters, choose a nonland card name.
Spells with the chosen name can't be cast.

Whenever you cast a black spell or a Swamp you control enters, you gain 1 life.

Flying, deathtouch, lifelink
Renew — , Exile this card from your graveyard: Put a flying counter, a deathtouch counter, and a lifelink counter on target creature. Activate only as a sorcery.

Return all creature cards from your graveyard to the battlefield. Each of them is a 1/1 Spirit with flying in addition to its other types. Exile Storm of Souls.

If this card is in your opening hand, you may begin the game with it on the battlefield.
Creature tokens get +1/+1.

Landfall — Whenever a land you control enters, you gain 1 life and draw a card.

(: Add .)

Enchant creature
Enchanted creature can't be blocked except by Walls.

You may play up to three additional lands this turn.

Devoid (This card has no color.)
At the beginning of your upkeep, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this token: Add ."
, Sacrifice this enchantment: Search your library for an Eldrazi card, reveal it, put it into your hand, then shuffle.

Assist (Another player can pay up to of this spell's cost.)
Flying
When this creature enters, return target instant, sorcery, or creature card from a graveyard to its owner's hand.

(: Add .)

Blazing Salvo deals 3 damage to target creature unless that creature's controller has Blazing Salvo deal 5 damage to them.

You may pay rather than pay this spell's mana cost.
Trample
At the beginning of your upkeep, you may create a 3/3 green Beast creature token.

Return a Forest you control to its owner's hand: Untap target creature. Activate only once each turn.

This land enters tapped unless you control two or more other lands.
: Add or .

Exile target spell, then roll a d20 and add that spell's mana value.
1—14 | You may cast the exiled card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.
15+ | You may cast the exiled card without paying its mana cost for as long as it remains exiled.

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters or dies, create a 1/1 red Goblin creature token.