Trample
If you tap a permanent for mana, it produces three times as much of that mana instead.

: Add . This land deals 2 damage to you.

Whenever you play a land or cast a spell, draw a card.
At the beginning of your end step, your life total becomes half your starting life total, rounded up.

You may cast Dragon spells without paying their mana costs.

Players can't untap more than one creature during their untap steps.

Players can cast spells only during their own turns.

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

Double all your spells and abilities. (All spells and abilities cast, activated, or triggered by you are copied. Mana abilities produce twice as much mana.)

Whenever Radagast or another nontoken creature you control enters, look at the top X cards of your library, where X is that creature's mana value. You may reveal a creature card that doesn't share a creature type with a creature you control from among those cards and put it into your hand. Put the rest on the bottom of your library in a random order.

When Muxus enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.
Whenever Muxus attacks, it gets +1/+1 until end of turn for each other Goblin you control.

, Sacrifice this artifact: Add three mana of any one color. Spend this mana only to cast your commander.

Trample, infect, indestructible
If Blightsteel Colossus would be put into a graveyard from anywhere, reveal Blightsteel Colossus and shuffle it into its owner's library instead.

Indestructible
When The One Ring enters, if you cast it, you gain protection from everything until your next turn.
At the beginning of your upkeep, you lose 1 life for each burden counter on The One Ring.
: Put a burden counter on The One Ring, then draw a card for each burden counter on The One Ring.

, Sacrifice one or more artifacts: Choose a color. Target player adds three mana of the chosen color for each artifact sacrificed this way. (Activate only as an instant.)

This spell costs more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.

At the beginning of each player's upkeep, this enchantment deals X damage to that player, where X is the number of untapped lands they controlled at the beginning of this turn.

This land enters tapped with two depletion counters on it.
, Remove a depletion counter from this land: Add . If there are no depletion counters on this land, sacrifice it.

(: Add or .)
As this land enters, you may pay 2 life. If you don't, it enters tapped.

Equipped creature gets +2/+2 and has protection from green and from blue.
Whenever equipped creature deals combat damage to a player, you create a 2/2 green Wolf creature token and that player mills ten cards.
Equip

+1: You gain life equal to the number of creatures you control plus the number of planeswalkers you control.
−2: Create a 2/2 white Cat Soldier creature token named Ajani's Pridemate with "Whenever you gain life, put a +1/+1 counter on this token."
0: If you have at least 15 life more than your starting life total, exile Ajani and each artifact and creature your opponents control.