Blue creatures you control can't be blocked.

Destroy target artifact or land.

(Theme color: )

Target player reveals their hand. You choose an artifact or creature card from it. That player discards that card.

Enchant creature
You control enchanted creature.
At the beginning of your end step, if enchanted creature's power is 4 or greater, sacrifice Domestication.

Create two 1/1 red Goblin creature tokens.

Flying, lifelink
Whenever you draw a card, Dream Trawler gets +1/+0 until end of turn.
Whenever Dream Trawler attacks, draw a card.
Discard a card: Dream Trawler gains hexproof until end of turn. Tap it.

Enchant creature
Enchanted creature has forestwalk. (It can't be blocked as long as defending player controls a Forest.)

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters the battlefield with a +1/+1 counter on it.)
Flying

Hidden agenda (Start the game with this conspiracy face down in the command zone and secretly choose a card name. You may turn this conspiracy face up any time and reveal that name.)
Whenever you cast an instant or sorcery spell, if it targets a creature you control with the chosen name, you may copy that spell and may choose new targets for the copy.

Flash
Enchant creature
Enchanted creature gets +5/+5 and has trample.

Flying
Spells your opponents cast that target one or more commanders you control cost more to cast.
Partner (You can have two commanders if both have partner.)

Flying
When Experimental Aviator enters the battlefield, create two 1/1 colorless Thopter artifact creature tokens with flying.

Whenever Exuberant Wolfbear attacks, you may change the base power and toughness of target Human you control to Exuberant Wolfbear's power and toughness until end of turn.

At the beginning of each end step, if a +1/+1 counter was put on a permanent under your control this turn, put a +1/+1 counter on Fairgrounds Trumpeter.

Commanders you control have menace and deathtouch.
Partner (You can have two commanders if both have partner.)

When Fblthp, the Lost enters the battlefield, draw a card. If it entered from your library or was cast from your library, draw two cards instead.
When Fblthp becomes the target of a spell, shuffle Fblthp into its owner's library.

Landfall — Whenever a land enters the battlefield under your control, put a +1/+1 counter on Fearless Fledgling. It gains flying until end of turn.

: Up to two target Swamps each become 3/5 Treefolk Warrior creatures in addition to their other types until end of turn.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)
, Sacrifice another creature: Put two +1/+1 counters on Flesh Carver.
When Flesh Carver dies, create an X/X black Horror creature token, where X is Flesh Carver's power.