msem-instigator

You can't cast this spell unless you revealed a card named Ancient Tome from anywhere this game.
{T}: Draw a card.
Cycling {2} ({2}, Discard this card: Draw a card.)

This spell costs {3} less to cast if it targets a creature you control.
Exile target creature, then you may return it to the battlefield under its owner's control. Otherwise, put it on top of its owner's library.

Resolute — At the beginning of combat on your turn, if Glisterhorn's power is greater than its base power, tap target creature an opponent controls.

Prowess

Colossal 4—{8} (You may cast this for its colossal cost to have it enter with four +1/+1 counters; or pay {8} as a sorcery: Put four +1/+1 counters on it if it has none.)
Abilities you activate that aren't mana abilities cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Draw two cards.

When Mana Rose enters, you gain 2 life and scry 2.
{1}, {T}: Add one mana of any color.

Enspirit (As you cast this spell, you may exile a nonenchantment creature you control until this leaves the battlefield or fails to resolve. Reduce this spell's cost by the exiled card's mana value.)
When Soul Trapper enters, tap target creature an opponent controls. That creature doesn't untap during its controller's untap step for as long as you control Soul Trapper.

Enchant permanent
Enchanted permanent is a land with “{T}: Add {G}{W}{U}” and loses all other card types and abilities.
{1}, Discard Song of Shoals: Add one mana of any color. Scry 1.

Poisonous 5 (Whenever this creature deals combat damage to a player, that player gets five poison counters.)
At the beginning of your upkeep, if an opponent is poisoned, you may destroy target Human.

Destroy target creature with power 3 or less. Mill three cards.

Whenever Fallacy's Channeler becomes untapped, each player sacrifices a creature.
{T}, Pay 1 life: Fallacy's Channeler deals 1 damage to any target.

First mate — Twelve or more cards in your starting deck are Dragons or have “Dragon” in their printed rules text. (If this card outside the game is your chosen first mate, you may swap it with a card in your opening hand.)
Dragon spells you cast cost {1} less to cast.
Whenever Ashe attacks, it deals X damage to any target, where X is the number of Dragons you control.

Menagerie — This spell costs {2} less to cast if there are five or more creature types among creatures you control.
Destroy target creature with power or toughness 4 or greater.

This spell costs {1} less to cast for each differently named land you control.
Reach, trample

Flying
Attain {4}{B} ({4}{B}: Transform this. Spend at least three colors of mana to activate this, and only as a sorcery.)

Enchant creature
Enchanted creature gets -1/-3.

Equipped creature gets +2/+2.
Whenever equipped creature deals combat damage to a player, you may put a permanent card with mana value 2 or less from your hand onto the battlefield.
Equip {2}

Two target creatures you control each get +2/+1 until end of turn.

As The Usurper's Final Rest enters, choose a card name.
Spells with the chosen name can't be cast.
If a card with the chosen name would enter the battlefield or be put into a graveyard from anywhere, exile it instead.

Choose a creature. Exile the rest.

When Seven Deadly Sins has seven or more sin counters on it, sacrifice it.
{B}{B}, Put a sin counter on Seven Deadly Sins: Destroy target creature. This ability costs {1} more to activate for each sin counter on Seven Deadly Sins.

Flying
{2}{U}: Until end of turn, target creature has your choice of base power and toughness 1/1 or 4/4 until end of turn. Activate only outside of combat.

Flying
Cragstalker Eagle gets +2/+2 as long as you've cast a creature spell and a noncreature spell this turn.
You may cast Adventure spells and spells with Adventures from your hand as though they had flash.

When Shark Slayer enters, you may destroy target creature with mana value less than or equal to the number of artifacts you control.