At the beginning of your end step, if you control no untapped lands, draw a card.

Spells your opponents cast cost more to cast.

At the beginning of your end step, each opponent loses 1 life.

, : Target creature you control gets +3/+3 until end of turn. Its controller sacrifices it at the beginning of the next end step.

At the beginning of your end step, if you didn't play a land this turn, you may draw a card.

, : Target creature you control gets +X/+X until end of turn. Destroy it at the beginning of the next end step.

When a spell or ability an opponent controls causes you to discard this card, return this card from your graveyard to the battlefield with a +1/+1 counter on it at the beginning of the next end step.

Players can't activate planeswalkers' loyalty abilities.

At the beginning of your draw step, draw an additional card.

Spells you cast cost less to cast.

Creatures you control get +1/+1.

At the beginning of your end step, you may exile target creature you control, then return that card to the battlefield under your control.

Whenever a player casts a spell, they may pay . If the player does, they draw a card at the beginning of the next end step.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

At the beginning of your upkeep, you may move a +1/+1 counter from target creature onto this creature.

Modular 3 (This creature enters with three +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

At the beginning of your upkeep, put a pin counter on this artifact.

At the beginning of your end step, if this artifact is untapped, destroy this artifact and it deals damage to you equal to the number of pin counters on it.

, : This artifact deals damage equal to the number of pin counters on it to any target. X is the number of pin counters on this artifact.

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.

Flying

This creature doesn't untap during your untap step.

At the beginning of your upkeep, you may pay . If you do, untap this creature.

Affinity for Slivers (This spell costs less to cast for each Sliver you control.)

Slivers you control have double strike and haste.

At the beginning of your upkeep, create two 1/1 colorless Sliver creature tokens.

At the beginning of your end step, if you control two or more other creatures, draw a card.

: Create a 1/1 colorless Soldier artifact creature token.

Unearth

At the beginning of your upkeep, put a +1/+1 counter on this creature.

This creature can't attack or block unless you pay for each +1/+1 counter on it.

Prototype — 3/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

Flying

At the beginning of combat on your turn, target creature you control gains your choice of flying, vigilance, or lifelink until end of turn.

Karn's power and toughness are each equal to the greatest mana value among artifacts you control.

At the beginning of your upkeep, add for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.