You may play two additional lands on each of your turns.

Trample
Whenever a source deals damage to this creature, that source's controller sacrifices that many permanents of their choice.

Dark Depths enters with ten ice counters on it.
: Remove an ice counter from Dark Depths.
When Dark Depths has no ice counters on it, sacrifice it. If you do, create Marit Lage, a legendary 20/20 black Avatar creature token with flying and indestructible.

Whenever you cast a spell you don't own, create a 3/3 black Demon creature token.
+1: Draw a card. For each opponent, exile up to one target instant or sorcery card from that player's graveyard and put a page counter on it.
−3: You may cast a spell from among cards in exile with page counters on them without paying its mana cost.
Tasha, the Witch Queen can be your commander.

When The Mightstone and Weakstone enters, choose one —
• Draw two cards.
• Target creature gets -5/-5 until end of turn.
: Add . This mana can't be spent to cast nonartifact spells.
(Melds with Urza, Lord Protector.)

Choose one —
• Boros Charm deals 4 damage to target player or planeswalker.
• Permanents you control gain indestructible until end of turn.
• Target creature gains double strike until end of turn.

This spell can't be countered.
: Target spell can't be countered.

Pack Rat's power and toughness are each equal to the number of Rats you control.
, Discard a card: Create a token that's a copy of this creature.

Prevent all combat damage that would be dealt this turn.

Whenever you gain life, target opponent loses that much life.
When Enduring Tenacity dies, if it was a creature, return it to the battlefield under its owner's control. It's an enchantment. (It's not a creature.)

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

Other Elf creatures get +1/+1 and have forestwalk. (They can't be blocked as long as defending player controls a Forest.)

Whenever another creature enters, you gain 1 life.

+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."

When Terra enters, mill five cards. Put up to one enchantment card milled this way into your hand.
Trance — , : Exile Terra, then return it to the battlefield transformed under its owner's control. Activate only as a sorcery.

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.)
: Draw a card.

Whenever a nontoken creature you control enters, if it doesn't have the same name as another creature you control or a creature card in your graveyard, draw a card.

, : Return target enchantment card from your graveyard to the battlefield.
Whenever Go-Shintai of Life's Origin or another nontoken Shrine you control enters, create a 1/1 colorless Shrine enchantment creature token.

When Mu Yanling enters, create a 3/2 colorless Vehicle artifact token with crew 1.
Vehicles you control have flying.
Whenever one or more creatures you control with flying deal combat damage to a player, draw a card.

Sacrifice an artifact: Add .