During your turn, your opponents can't cast spells or activate abilities of artifacts, creatures, or enchantments.

Flying
At the beginning of combat on your turn, populate. (Create a token that's a copy of a creature token you control.)
Whenever a creature token you control enters, put a +1/+1 counter on this creature.

Vigilance
Other creatures you control get +2/+2.
Creatures your opponents control get -2/-2.

Search your library for a card, put that card into your hand, discard a card at random, then shuffle.

Flying
Activated abilities of artifacts, creatures, and planeswalkers can't be activated.

Whenever a creature enters, if it entered from your graveyard or you cast it from your graveyard, return this card from your graveyard to the battlefield tapped at the beginning of the next end step.

Other Merfolk creatures you control get +1/+1.
Whenever you cast a Merfolk spell, you may tap or untap target permanent.

Flying, trample
Pay 2 life, Sacrifice another creature: Search your library for a card, put that card into your hand, then shuffle.

The next time a source of your choice would deal damage to you this turn, prevent that damage. You gain life equal to the damage prevented this way.
At the beginning of your next upkeep, pay . If you don't, you lose the game.

Whenever a creature you control attacks, you may put a quest counter on this enchantment.
As long as this enchantment has seven or more quest counters on it, creatures you control get +5/+5.

Haste
When this creature enters, creatures you control gain trample and get +X/+X until end of turn, where X is the number of creatures you control.

When this creature enters, you may search your library for an artifact card, put it into your graveyard, then shuffle.
, , Sacrifice an artifact: Return target artifact card with mana value 3 or less from your graveyard to the battlefield.

Reach
Modified creatures you control have trample. (Equipment, Auras you control, and counters are modifications.)
Whenever a modified creature you control deals combat damage to a player, search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Flying, menace
Whenever this creature attacks, each player gets two rad counters.
Whenever one or more nonland cards are milled, you may create that many 2/2 black Zombie Mutant creature tokens. Do this only once each turn.

: Add one mana of any color in your commander's color identity.

When Dogmeat enters, mill five cards, then return an Aura or Equipment card from your graveyard to your hand.
Whenever a creature you control that's enchanted or equipped attacks, create a Junk token. (It's an artifact with ", Sacrifice this token: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.")

Lifelink
If a nontoken creature an opponent controls would die, instead exile that card and create a 2/2 black Zombie creature token.
, Sacrifice another Vampire or Zombie: Put two +1/+1 counters on Kalitas.

Flying, trample, indestructible, haste
Other artifact creatures you control have flying, trample, indestructible, and haste.

Jump — During your turn, Freya Crescent has flying.
: Add . Spend this mana only to cast an Equipment spell or activate an equip ability.

Vigilance
When Gandalf enters, exile up to three target lands you control, then return them to the battlefield tapped under their owner's control.
Landfall — Whenever a land you control enters, draw a card and put a +1/+1 counter on Gandalf.