You may spend white mana as though it were red mana.

Target opponent loses life equal to the number of creatures they control. Then destroy all creatures.

: Add X mana of any one color, where X is the number of creature cards in your graveyard.

Each player chooses any number of creatures they control with total power 4 or less, then sacrifices all other creatures they control.

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional .

Search your library for up to four land cards with different names and reveal them. An opponent chooses two of those cards. Put the chosen cards into your graveyard and the rest onto the battlefield tapped, then shuffle.

(: Add .)

All Sliver creatures have double strike.

Whenever another Human you control enters, put a +1/+1 counter on this creature.

This artifact enters tapped.
, : Destroy all artifacts, creatures, and enchantments.

Sacrifice X Zombies, then reveal cards from the top of your library until you reveal a number of Zombie creature cards equal to the number of Zombies sacrificed this way. Put those cards onto the battlefield and the rest on the bottom of your library in a random order.

Whenever another creature dies, you may gain 1 life.

Sneak (You may cast this spell for if you also return an unblocked attacker you control to hand during the declare blockers step.)
Return one or two target creature cards each with mana value 3 or less from your graveyard to the battlefield.

Reach
When Gandalf enters, he deals 3 damage divided as you choose among one, two, or three targets.

Whenever equipped creature deals combat damage to a player, you draw that many cards.
Equip
Equip Shaman, Warlock, or Wizard

+1: Discard your hand, then exile the top three cards of your library. Until end of turn, you may play cards exiled this way.
+1: Chandra deals 2 damage to any target.
−9: Search your graveyard and library for any number of red instant and/or sorcery cards, exile them, then shuffle. You may cast them this turn. Add six .

Trample
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

This land enters tapped.
When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
: Add or .

Reach, ward
Whenever you cast a creature or planeswalker spell, venture into the dungeon. This ability triggers only once each turn. (To venture into the dungeon, enter the first room or advance to the next room.)
Whenever you complete a dungeon, create a 2/2 green Wolf creature token.

Landfall — Whenever a land you control enters, put a charge counter on this artifact.
: Add one mana of any color.
, Remove two charge counters from this artifact: Add .
, Remove three charge counters from this artifact: It deals 3 damage to any target.