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

Search your library for a card, put that card into your hand, then shuffle.

As this land enters, choose a creature type.
: Add .
: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

Enchant creature
Whenever enchanted creature deals damage to an opponent, you may draw a card.

You may exile a red card with mana value X from your hand rather than pay this spell's mana cost.
Target creature gets +X/+0 until end of turn.

Each land is a Swamp in addition to its other land types.

Double target player's life total. Shuffle Beacon of Immortality into its owner's library.

Create ten 1/1 white Insect creature tokens with flying. Exile 17-Year Cicadas with seventeen time counters on it.
Suspend 17 — (Rather than cast this card from your hand, you may pay and exile it with seventeen time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)
Whenever you cast a spell, if this card is suspended, remove a time counter from it.

: Add .
: Add or . This artifact deals 1 damage to you.

Target player discards X cards at random.

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

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

If you control a commander, you may cast this spell without paying its mana cost.
Counter target noncreature spell.

Kicker (You may pay an additional as you cast this spell.)
Target creature phases out. If this spell was kicked, each creature target player controls phases out instead. (Treat phased-out creatures and anything attached to them as though they don't exist until their controller's next turn.)

, Pay 1 life: Add or .
, , Sacrifice this land: Draw a card.

Whenever an opponent draws a card, that player may pay . If the player doesn't, you create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

, Sacrifice a creature: Destroy target nonblack creature.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
Sliver spells you cast have cascade.

First strike, trample, lifelink
Stagger — Whenever Lightning deals combat damage to a player, until your next turn, if a source would deal damage to that player or a permanent that player controls, it deals double that damage instead.

Add .