Large aberration, Challenge 5
Armor Class 15, Hit Points 75
Speed O ft., fly 20 ft. (hover)
Attacks Bite, Tentacles, Eye Rays
STR 10 (+0) DEX 14 (+2) CON 14 (+2)
INT 15 (+2) WIS 15 (+2) CHA 10 (+0)

(An ongoing scheme remains face up until it's abandoned.)
Whenever a player casts a spell, you draw a card.
At the beginning of your upkeep, if you drew a card last turn, abandon this scheme.

Mines of Moria enters tapped unless you control a legendary creature.
: Add .
, , Exile three cards from your graveyard: Create two Treasure tokens.

Haste
Minotaur Goreseeker attacks each turn if able.

Haste
Minotaur Younghorn attacks each turn if able.

This land enters tapped. As it enters, choose a color.
: Add one mana of the chosen color.

: Add .
, , Sacrifice a creature: You gain life equal to the sacrificed creature's toughness.

This land enters tapped.
: Add or .
, , Sacrifice this land: Put two +1/+1 counters on target Bear, Spider, or Wolf you control. Activate only as a sorcery.

: Add .
: Add one mana of any color. Activate only if this land entered this turn.
, : Create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This token can't block."

Basic lands you control have ": Add one mana of any one color."

Starting & Max Hand Size: +0
Starting Life: +5

: Add .
: Put a charge counter on this land.
, Remove a charge counter from this land: Add one mana of any color.

Whenever a player casts a spell, that player flips a coin. If the player loses the flip, counter that spell.

Whenever chaos ensues, target player reveals the top card of their library. If it's a nonland card, you may cast it without paying its mana cost.

Reflect (As this enters, each opponent may pay . If they do, they create a token copy of this except it lacks this ability.)
, Exile this artifact: Add three mana of any one color.

This land enters tapped.
: Add .
, , Sacrifice this land: Copy target instant or sorcery spell you control. You may choose new targets for the copy.
, , Sacrifice this land: Create a token that's a copy of target creature you control.

If a creature you control would deal damage, it deals double that damage instead.

Starting & Max Hand Size: +0
Starting Life: -3