When Boonweaver Giant enters the battlefield, you may search your graveyard, hand, and/or library for an Aura card and put it onto the battlefield attached to Boonweaver Giant. If you search your library this way, shuffle it.

Whenever Borderland Marauder attacks, it gets +2/+0 until end of turn.

Equipped creature gets +2/+2 and has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Whenever an Aura becomes attached to Brood Keeper, create a 2/2 red Dragon creature token with flying. It has ": This creature gets +1/+0 until end of turn."

Enchant creature
Enchanted creature has ": This creature deals damage equal to its power to any target."

Counter target spell.

: Put a +1/+1 counter on Carnivorous Moss-Beast.

Flying (This creature can't be blocked except by creatures with flying or reach.)
Carrion Crow enters the battlefield tapped.

Enchant land
Enchanted land has ": Target player loses 3 life."

: Add .
: Add or . Caves of Koilos deals 1 damage to you.

[+1]: Chandra, Pyromaster deals 1 damage to target player or planeswalker and 1 damage to up to one target creature that player or that planeswalker's controller controls. That creature can't block this turn.
[0]: Exile the top card of your library. You may play it this turn.
[−7]: Exile the top ten cards of your library. Choose an instant or sorcery card exiled this way and copy it three times. You may cast the copies without paying their mana costs.

Charging Rhino can't be blocked by more than one creature.

Whenever you draw a card, put a +1/+1 counter on Chasm Skulker.
When Chasm Skulker dies, create X 1/1 blue Squid creature tokens with islandwalk, where X is the number of +1/+1 counters on Chasm Skulker. (They can't be blocked as long as defending player controls an Island.)

Artifact spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting an artifact spell pays for or one mana of that creature's color.)

Lifelink

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)
Search your library for a creature card with converted mana cost X or less and put it onto the battlefield. Then shuffle your library.

Put target creature into its owner's library second from the top.

Whenever a creature without flying attacks you or a planeswalker you control, Circle of Flame deals 1 damage to that creature.