Whenever another creature you control enters, you may have Inspired Youth dare X, where X is that creature's power.

Whenever a land you control enters, if it doesn't share a name with any other lands you control, create a 1/1 red and green Elemental creature token.

Solidarity
Londel Sharpshot can't be blocked by creatures with power 2 or less.

Whenever one or more cards leave your graveyard, you gain 2 life. This ability triggers only once each turn.

Whenever you cast an instant or sorcery spell, untap Orbinoid.
{T}: Add one mana of any type.

Deathtouch
Whenever Pidae Raider deals combat damage to a player, create a Treasure token.

Trample
Whenever Skittertiller deals combat damage to a player, put a +1/+1 counter on it.

Reach
Whenever Star-Studded Sagittaur deals combat damage to a player, you may bless target land.

Deathtouch
{1}, Sacrifice Telhedo Saboteur: Destroy target artifact or enchantment.

Deathtouch
{G}: Temptuous Crooner gains reach until end of turn.

{G}: Exile target card from a graveyard. If it was a creature card, you gain 1 life. If it was a noncreature, nonland card, scry 1.

Flash
When Benthalos of Land and Sea enters, you may pay {X}. When you do, create a token that's a copy of target white or blue enchantment you control with mana value X or less.

Flying, vigilance
If you would draw a card, you may exile a card from your graveyard instead. When you do, reveal cards from the top of your library until you reveal a card that shares a card type with the exiled card. Put that card into your hand, and the rest on the bottom in a random order.

Genetics Prodigy enters with a +1/+1 counter, a flying counter, and a vigilance counter on it.
Whenever Genetics Prodigy attacks, you may remove a counter from it. If you do, draw a card.

Flying
Whenever a creature you control with flying deals combat damage to a player, you may pay {U/B}. If you paid {U}, draw a card. If you paid {B}, that player discards a card.

Whenever Ancient Conscriptor becomes spellcharged, gain control of target creature you don't control until end of turn. Untap it. It gains haste until end of turn.
Spellcharge 4

Deathtouch
When you sacrifice Devoted Lackies as a cost to cast a spell or activate an ability that isn't a mana ability, copy that spell or ability. You may choose new targets for the copy.

First strike
Whenever Tormenting Lightrider attacks, if defending player has 10 or less life, Tormenting Lightrider gains double strike until end of turn.
At the beginning of your end step, if a creature died this turn, each opponent loses 3 life unless they discard a card or sacrifice a nonland permanent.

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

{T}: Add one mana of any color.
At the beginning of combat on your turn, if you've spent at least five mana to cast spells this turn, untap Speaker of Endless Winter and put a +1/+1 counter on it.

Flash
When Eleanor, Royal Captain enters, target legendary creature gains indestructible until end of turn.
Cybersoul {5}{W/B}

Lifelink
{B}, Pay 2 life: Mortea, Bloodline Keeper gets +1/+1 until end of turn.
At the beginning of your end step, if you have at least 7 life more than your starting life total, you may return Mortea from your graveyard to the battlefield tapped.

When Projects Overseer enters, surveil 2.

Flying
Whenever you amp it up, Android Stunner deals 1 damage to any target. If a permanent was dealt damage this way, tap it and put a stun counter on it.

Flying, haste
When Blistering Cryophoenix enters, discard any number of cards, then draw that many cards.
If a spell you own which had its flashback cost paid would be put into exile, put it into your hand instead.