Whenever this creature attacks, you may sacrifice a Blood token. If you do, put a +1/+1 counter on this creature and draw a card.

This land enters tapped.
When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
: Add or .

, , Sacrifice this artifact: Add one mana of any color.
When this artifact is put into a graveyard from the battlefield, draw a card.

Whenever this creature attacks, if you control a Chandra planeswalker, this creature deals 2 damage to any target.

Reach
When this creature enters, you may destroy target creature with flying.

Enchant creature
Enchanted creature gets +2/+2.
As long as another Aura is attached to enchanted creature, it has first strike and lifelink.

If you control a Forest, rather than pay this spell's mana cost, you may have an opponent gain 3 life.
Target creature gets +4/+4 until end of turn.

Alliance — Whenever another creature you control enters, create a Treasure token if this is the first or second time this ability has resolved this turn. Otherwise, you may pay . When you do, this creature deals X damage to any target.

Flying
Sacrifice this creature: Creatures you control gain indestructible until end of turn.

Whenever one or more nontoken creatures you control die, investigate. This ability triggers only once each turn. (Create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")

Flying
This creature attacks each combat if able.

At the beginning of your end step, create a 1/1 red Officer creature token for each dilemma you've faced this turn.
, : Exile the top five cards of your library. You may cast any number of spells with mana value less than or equal to the number of Officers you control from among those cards without paying their mana costs.

When this creature enters, creatures you control get +1/+1 until end of turn.
Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Whenever this creature attacks, put a lore counter on target Saga you control.

Draw X cards, where X is the number of card types among cards in your graveyard.

Partner with Evie Frye (When this creature enters, target player may put Evie into their hand from their library, then shuffle.)
Whenever one or more Assassins you control deal combat damage to a player, exile up to one target Assassin card or card with freerunning from your graveyard. If you do, copy it. You may cast the copy.

All Slivers have "When this permanent enters, you may fateseal 1." (To fateseal 1, its controller looks at the top card of an opponent's library, then they may put that card on the bottom of that library.)

Each player sacrifices the creature they control with the greatest mana value unless they pay that creature's mana cost. If two or more creatures a player controls are tied for greatest, that player chooses one.

Flying, trample, haste
As long as there are fewer than eight cards in your graveyard, The Warring Triad isn't a creature.
, Mill a card: Target player adds one mana of any color. (Activate only as an instant.)

Trample
Whenever you attack, Klingons and Warriors you control get +2/+0 and gain trample until end of turn.