Flying
Haubay's Familiar can block only creatures with flying.
Whenever you draw your second card each turn, put a +1/+1 counter on Haubay's Familiar.

Lifelink
{5}{W}: Creatures you control get +1/+1 until end of turn.

This spell costs {1} less to cast for each instant and/or sorcery card in your graveyard.
When Heretic Hunters enters the battlefield, you may discard your hand. If you do, draw a card and Heretic Hunters deals 2 damage to each opponent.

Hivecaste Vukoroq gets +1/+2 as long as you control another creature named Hivecaste Vukoroq.

Trample
{1}{R}, Discard Ichor Connoisseur: Ichor Connoisseur deals 2 damage to any target.

When Impetuous Underling enters the battlefield, you may search your library for a card and put it into your graveyard, then shuffle.

Flash
Deathtouch

Trample
Whenever Iron Steambreaker attacks, put a +1/+1 counter on it.

Flying
Whenever Irrlicht deals combat damage to a player, they reveal their hand and you choose a nonland card from it. Exile that card until your next turn.

Flying
Discard a card: Put a +1/+1 counter on Jetstream Cruiser. Activate only once each turn.

Other legendary creatures you control get +1/+1.
Whenever a legendary creature you control attacks, exile the top card of your library. You may play that card this turn.
Whenever you cast your fifth spell each turn, Juana deals 10 damage to any target.

Whenever Keeper of Death's Mysteries attacks, exile the top card of each player's library.
Once each turn, you may play a noncreature card exiled with Keeper of Death's Mysteries, and mana of any type can be spent to cast it.
Escape—{4}{U}{U}, Exile six other cards from your graveyard

Enchantment spells you cast cost {1} less to cast.
When Keeper of Starlight enters the battlefield, reveal the top five cards of your library. You may put an enchantment card from among them into your hand. Put the rest on the bottom of your library in any order.

Flash
When Klemnae Rescuer enters the battlefield, you may return a permanent you control to its owner's hand.

Revolt — Klemnae Stalwart enters the battlefield with a +1/+1 counter on it if a permanent you controlled left the battlefield this turn.
Klemnae Stalwart has first strike as long as it's attacking.

Menace
Indulgence
Whenever you indulge, put a +1/+1 counter on Lavish Host.

Multitude {2}{W}{W}
Whenever Lichbane Forerunner attacks, another target attacking Soldier you control gains indestructible until end of turn.

Revolt — At the beginning of your end step, if a permanent you controlled left the battlefield this turn, put a +1/+1 counter on Lichbane Gatecrasher.

Prowess
When Lichbound Arsonist dies, it deals damage equal to its power to target creature or planeswalker you don't control.

Menace
Other Elementals you control have menace.

Whenever this creature transforms into Lone Switchblade or another permanent you control transforms, each opponent loses 1 life and you gain 1 life.

Flash
Flying, lifelink
Your opponents can't create tokens.

Ward {1}
Cybersoul {X}{X}{W}

Flash
When Louna, the Ever-Learning enters the battlefield, for each kind of counter among permanents you control, you may put a counter of that kind on Louna, the Ever-Learning.

Haste
Lucille, Ruthless Warlord has first strike as long as she's attacking.
If another source would deal damage to a permanent other than Lucille or to a player, it deals double that damage to that permanent or player instead.
Escape—{3}{B}{R}, Pay 8 life.