Whenever another creature enters the battlefield under your control, Nomad's Companion gets +1/+1 until end of turn.

Enchant creature
Enchanted creature has “Whenever this creature deals combat damage to a player or planeswalker, scry 1, then draw a card.”

Flash
When Omen of Slaughter enters the battlefield, each opponent sacrifices a creature or planeswalker.
{2}{B}, Sacrifice Omen of Slaughter: Scry 2.

Vigilance
Whenever you attack, bless target creature.

Flash
When Primordial of Emila Glade enters the battlefield, return up to two instant and/or sorcery cards from your graveyard to your hand.
Once each turn, you may pay {U} rather than pay the mana cost for an instant or sorcery spell.

When Rano's Slopeguard enters the battlefield, you may exile cards from the top of your library until you exile a nonland card with mana value 2 or less, then put the rest on the bottom in a random order. You may cast the exiled card this turn.

Flying
Drop — When Sphinx of the Soundveins enters the battlefield, if you didn't cast any creature spells during your last turn, untap up to three lands.

Whenever you amp it up, target creature gets +1/+1 until end of turn. If this is the second time this ability has resolved this turn, put a +1/+1 counter on that creature instead.

{X}: Symbol of the Revolution dares X. X can't be 0.
As long as Symbol of the Revolution is a Rebel, it has flying, lifelink, and vigilance.

Tenacious Snapvines enters the battlefield with X +1/+1 counters and your choice of up to X different counters from among deathtouch, lifelink, vigilance, trample, menace, reach or ward {2} on it.
If damage would be dealt to Tenacious Snapvines, remove a +1/+1 counter and another kind of counter from it. If you do, prevent that damage.

Whenever a Ruin you control becomes spellcharged, it gets +1/+0 and gains haste until end of turn.
Spellcharge 2

First strike, vigilance
Whenever Unburnt Maiden enters the battlefield or attacks, you may have it dare X, where X is the number of creatures you control. If you don't, create a 1/1 white Warrior creature token.

Whenever you cast a colorless spell, you may pay {C}. If you do, copy it. You may choose new targets for the copy.
Whenever a creature you control attacks, put a +1/+1 counter on it for each other creature you control with the same name as that creature.

When Vibrant Vengeance enters the battlefield, all creatures get -2/-2 until of turn.
Whenever you tap a land for mana, add one mana of any type that land produced.

Wildcourt Seeker's power and toughness are each equal to the number of land types among lands you control.
Whenever Wildcourt Seeker enters the battlefield or attacks, put up to one target land card from your graveyard onto the battlefield under your control.

Flash
Multitude {4}{U}{U}
You may have Wildkin Imposter enter the battlefield as a copy of any creature on the battlefield.

Choose one —
• Destroy target artifact.
• Destroy target enchantment.
• Exile target card from a graveyard.

Whenever Adorned Lookout deals combat damage to an opponent, draw a card and untap a land you control.
{1}{G}: Adorned Lookout gets +2/+2 and can't be blocked by creatures with power 2 or less until end of turn. Activate only once each turn.

{1}{B}, {T}, Sacrifice Afterlife Augur: Return target creature card from your graveyard to the battlefield. It can't block this turn.

When All the Stars are Mine enters the battlefield and at the beginning of your upkeep, untap all noncreature permanents you don't control. You gain control of them until end of turn.

When An Unlikely Peace enters the battlefield, mill two cards.
{1}{G}: Return up to two target land cards from your graveyard to your hand.

Search your library for an enchantment card with mana value 5 or greater, reveal it, put it into your hand, then shuffle. You gain 5 life.

Whenever you draw a card except the first one you draw in each of your draw steps, tap up to one target creature.

{2}, {T}: When you cast your next instant or sorcery spell this turn, copy it. If that spell targets a permanent you control, copy it an additional time. You may choose new targets for the copies.