"Spoopy Scythe" enters the battlefield with a soul counter on it.
Equipped creature gets +1/+1 for each soul counter on "Spoopy Scythe".
Whenever equipped creature dies, put a soul counter on "Spoopy Scythe".
Equip (: Attach to target creature you control. Equip only as a sorcery.)

When Azra Bladeseeker enters the battlefield, each player on your team may discard a card, then each player who discarded a card this way draws a card.

Target creature gets +2/+1 until end of turn. If it's legendary, it also gains lifelink until end of turn.

Lifelink
When Bloodline Necromancer enters the battlefield, you may return target Vampire or Wizard creature card from your graveyard to the battlefield.

Each player mills four cards. Return up to two instant and/or sorcery cards from your graveyard to your hand. Exile Bond of Insight.

Whenever you cycle a card, you may have Crystalline Resonance become a copy of another target permanent until your next turn, except it has this ability.

As long as you've surveilled this turn, Darkblade Agent has deathtouch and "Whenever this creature deals combat damage to a player, you draw a card."

Target creature gets -1/-1 until end of turn for each Swamp you control.

Enchant creature
Enchanted creature can't block, and its activated abilities can't be activated.

Flash
This spell costs less to cast for each attacking creature you control.
When Embercleave enters the battlefield, attach it to target creature you control.
Equipped creature gets +1/+1 and has double strike and trample.
Equip

When Excavating Anurid enters the battlefield, you may sacrifice a land. If you do, draw a card.
Threshold — As long as seven or more cards are in your graveyard, Excavating Anurid gets +1/+1 and has vigilance.

Fiery Finish deals 7 damage to target creature.

Forgotten Sentinel enters the battlefield tapped.

Trample
When Gluttonous Troll enters the battlefield, create a number of Food tokens equal to the number of opponents you have. (Food tokens are artifacts with ", , Sacrifice this artifact: You gain 3 life.")
, Sacrifice another nonland permanent: Gluttonous Troll gets +2/+2 until end of turn.

Deathtouch

Haste (This creature can attack and as soon as it comes under your control.)

Flying
When Kharis & The Beholder enters the battlefield and at the beginning of your upkeep, create a 1/1 white Human creature token and make a charisma check. (Roll a d20.)
• If the result plus the number of creatures you control is greater than 11, put a +1/+1 counter on each creature you control.
• If the result is a natural 20, for each nonlegendary creature you control, create a token that's a copy of that creature.

Haste
Lieutenant — At the beginning of combat on your turn, if you control your commander, create a 1/1 colorless Thopter artifact creature token with flying. That token gains haste until end of turn.

Malefic Scythe enters the battlefield with a soul counter on it.
Equipped creature gets +1/+1 for each soul counter on Malefic Scythe.
Whenever equipped creature dies, put a soul counter on Malefic Scythe.
Equip (: Attach to target creature you control. Equip only as a sorcery.)