msem-instigator

Counter target spell.

Trample
Other Beasts you control have trample.
Whenever Magnoceros attacks, create a 5/5 green Beast creature token that's tapped and attacking.

Reach, trample
{1}{G}: You may remove a counter from a creature you control. If you do, tap that creature and it gains indestructible until end of turn.

Flash
Flying
Prodigious Panya has base power and toughness 4/4 during extra turns.

Codex — Aspiring Dragon; Scrappy Hatchling; Skiviar Scraplord; Blizzard Dragon; Cloud Swine; Gold Retriever; Ilieth, Transcendent. (As this enters, conjure its contents into a shuffled face-up additional library.)
At the beginning of your upkeep, you may put a card from this codex's library on the bottom of that library.

Defender
Wanderlust — As long as you control four or more differently named lands, Zhedina Servitor can attack as though it didn't have defender.

Flash
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Enchant creature
Enchanted creature has flying and “Sacrifice a creature: This creature gets +2/+1 until end of turn.”
When Fallen Ideal is put into a graveyard from the battlefield, return Fallen Ideal to its owner's hand.

Whenever a land you control enters, create a 1/1 colorless Servo artifact creature token.
{4}{G}{W}: Put a +1/+1 counter on each creature you control. They gain trample until end of turn.

Return target creature card from your graveyard to the battlefield.
Reconstruct {4}{B}{B}{B} (You may cast this from your graveyard for its reconstruct cost reduced by the mana value of a permanent you sacrifice as you cast it this way. Then exile this.)

Trample
When Reckless Exemplar attacks, if its power is greater than its base power, target creature an opponent controls can't block this turn.

Engage (This creature must be blocked each combat if able.)
{R}: Mettlesome Watchkeeper gets +1/+0 until end of turn.

Trample
Risti Assault Squadron can't attack unless all other creatures you control also attack. (It can attack if it's the only creature you control.)

Return target non-Horror creature to its owner's hand. Scry 1.

As an additional cost to cast this spell, sacrifice X lands and/or creatures.
This spell can't be countered.
Create X tapped colorless enchantment land tokens named Paradise with hexproof and “{T}: Add one mana of any color.”

Draw two cards.
Cycling {2} ({2}, Discard this card: Draw a card.)

Search your library for a card, put that card into your hand, then shuffle.
Whenever you cast a spell with mana value 5 or greater, you may cast Words of Eternity from your graveyard without paying its mana cost. If you do, exile it instead of putting it into your graveyard as it resolves.

When Uncovered Secrets enters, search your library for an artifact card, reveal that card, then shuffle and put that card on top.
Concord — Creatures you control get +1/+1 as long as there are four or more card types among permanents you control.

Reveal the top five cards of your library. For each card type, you may put a card of that type revealed this way into your hand. Put the rest into your graveyard. Then you may cast a nonland card with mana value 3 or less from your hand without paying its mana cost.

Destroy target creature with flying.
Draw a card.

First strike
Whenever Sighted-Caste Knight deals combat damage to a player, draw a card.

When this creature enters, create a Treasure token.

Trample
Creatures in Paomar Primus's pack can't be blocked by more than one creature. (Two or more creatures you control with equal power are in a pack.)