Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Whenever another nontoken creature dies, you may draw a card.

Flying
Whenever another nontoken Dragon you control enters, create a 5/5 red Dragon creature token with flying.
: Dragons you control get +1/+0 until end of turn.

Whenever an opponent casts a spell, reveal the top card of your library. If it's a creature card, put it onto the battlefield. Otherwise, you may put that card on the bottom of your library.

Whenever Etali attacks, exile the top card of each player's library, then you may cast any number of spells from among those cards without paying their mana costs.

Flying (This creature can't be blocked except by creatures with flying or reach.)
: Return target creature card from your graveyard to the battlefield tapped.

Trample
Whenever another nontoken creature you control enters, you may draw a card.

When Lena enters, create a 1/1 white Soldier creature token for each nontoken creature you control.
Sacrifice Lena: Creatures you control with power less than Lena's power gain indestructible until end of turn.

Trample
Whenever this creature attacks, it gets +1/+1 until end of turn for each land you control.

Flying
Whenever a creature with flying attacks, you may draw a card.

Whenever another creature enters, you may put X +1/+1 counters on this creature, where X is that creature's power.

Flying
When this creature enters, you may cast target instant, sorcery, or artifact card from your graveyard without paying its mana cost. If an instant or sorcery spell cast this way would be put into your graveyard, exile it instead.

Flying
Each opponent who cast a spell this turn can't attack with creatures.
Each opponent who attacked with a creature this turn can't cast spells.

Flying
You may cast this creature from your graveyard by paying and sacrificing two creatures rather than paying its mana cost.

Flash
Flying
When this creature enters, if you cast it from your hand, exile all attacking creatures.

This spell costs less to cast, where X is the total power of creatures you control.
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)