Blue creatures don't untap during their controllers' untap steps.
At the beginning of each player's upkeep, that player may choose any number of tapped blue creatures they control and pay for each creature chosen this way. If the player does, untap those creatures.

: This creature deals 1 damage to any target.

Whenever this creature attacks, it gets +1/-2 until end of turn.
, : Target creature gains mountainwalk until end of turn. (It can't be blocked as long as defending player controls a Mountain.)

: Until your next upkeep, target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value.

Each noncreature artifact loses all abilities and becomes an artifact creature with power and toughness each equal to its mana value. If this enchantment leaves the battlefield, this effect continues until end of turn.

Whenever this creature attacks and isn't blocked, it gets +2/+0 until end of combat.

, : Destroy target black permanent.

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

, : Put a charge counter on this artifact.
, Remove any number of charge counters from this artifact: Add , then add an additional for each charge counter removed this way.

, : Draw a card.

Attacking creatures you control get +1/+0.

Prevent all damage that would be dealt to this creature by creatures.

: This creature gets +1/+1 until end of turn.

Trample
During your turn, Angry Mob's power and toughness are each equal to 2 plus the number of Swamps your opponents control. During turns other than yours, Angry Mob's power and toughness are each 2.

, Pay 2 life: Draw a card.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Destroy all creatures. They can't be regenerated.

Whenever this creature is dealt damage, put a +1/+1 counter on it.

As this artifact enters, choose an opponent.
The chosen player's maximum hand size is four.

, : This artifact deals 1 damage to any target.

Whenever a land is put into a graveyard from the battlefield, this artifact deals 2 damage to that land's controller.

All Forests are 1/1 creatures that are still lands.

, : Put a charge counter on this artifact.
, Remove any number of charge counters from this artifact: Add , then add an additional for each charge counter removed this way.

Untapped creatures you control get +0/+2.

: Regenerate this creature.

Enchant creature
Enchanted creature gets +3/+3.

Destroy all lands.

Enchant artifact
As long as enchanted artifact isn't a creature, it's an artifact creature with power and toughness each equal to its mana value.

Whenever a player taps a land for mana, this enchantment deals 1 damage to that player.

, : Put a charge counter on this artifact.
, Remove any number of charge counters from this artifact: Add , then add an additional for each charge counter removed this way.

At the beginning of each end step, put a corpse counter on this creature for each creature that died this turn.
Remove a corpse counter from this creature: Regenerate this creature.

Trample

Flying
: This creature gets +1/+0 until end of turn. If this ability has been activated four or more times this turn, sacrifice this creature at the beginning of the next end step.

: Target creature you control with toughness less than this creature's power gains flying until end of turn. Destroy that creature at the beginning of the next end step.

, : Target creature with power 2 or less can't be blocked this turn.