msem-instigator

Flying, vigilance
When Warden of Seas enters, tap all other creatures.
Each opponent can't untap more than one nonland permanent during each of their untap steps.

Flying
{1}, Sacrifice a creature: Put a +1/+1 counter on Bloodthirsty Manticore. It gains indestructible until end of turn. Tap it.
Surpass {4}{B}{R} ({4}{B}{R}: Transform this creature. This costs {1} less to activate for each counter on it. Activate only as a sorcery.)

Ruins Monitor can't be blocked by more than one creature.

When Chantwood Channeler enters from your graveyard, it gains haste and creatures you control get +3/+3 and gain trample until end of turn.
{5}{G}{G}{G}, Sacrifice a creature: Return Chantwood Channeler from your graveyard to the battlefield. Activate only as a sorcery.

Vigilance
Whenever you cast a noncreature spell, you gain 2 life.

Deathtouch
Chronicle (As this enters and after your draw step, add a lore counter. Stop after III.)
[Lore I-II] You may sacrifice another creature. If you do, draw a card.
[Lore III] Remove all lore counters from Astral Leech. Each opponent sacrifices a creature.

Return target instant or sorcery card from your graveyard to your hand.
Draw a card.

Siphon (Each -1/-1 counter you put on your creatures up to their remaining toughness while casting this pays for {1}.)
Choose up to X, where X is the amount of mana spent to cast this spell —
• Target creature gets -3/-3 until end of turn.
• Surveil 2.
• Create a 1/1 black Bat creature token with flying and “This creature can't block.”

As long as Vinehorn Stag has a +1/+1 counter on it, it can't be blocked by more than one creature.

Whenever you draw your second card each turn, put a +1/+1 counter on Current Surfer.
{R}, Discard your hand, Sacrifice Current Surfer: Draw X cards, where X is its power. At the beginning of the next end step, discard your hand.

Equipped creature gets +2/+1. As long as it's your turn, it has deathtouch and lifelink.
{4}, Unattach The Roseblade Reforged and return it to its owner's hand: Return target Knight or Soldier creature card from your graveyard to the battlefield tapped with a finality counter on it.
Equip {3}

Flying
Whenever another creature you control enters, you may have Waxing Celestial get +1/+1 until end of turn.

Whenever Malignant Afflicted perseveres, destroy target creature an opponent controls that dealt damage this turn. (A creature perseveres when it survives damage.)

As an additional cost to cast this spell, exile any number of other cards from your graveyard that have three or more card types among them.
Deathtouch
You may cast Lucid Dweller from your graveyard.

When River Miscreants enters, target creature you control can't be blocked this turn.
{2}{U}: Return River Miscreants to its owner's hand. Activate only as a sorcery.

Return target creature card from your graveyard to the battlefield. Then up to one target opponent sacrifices a creature if you control an Angel, Demon, Faerie, or Spirit.

Whenever a creature you control becomes monstrous, draw a card.

Gain control of target creature until end of turn. Put a +1/+1 counter on it and untap it. That creature gains haste until end of turn.

Armed — Beragnian Savage gets +1/+0 and has first strike as long as it's equipped.

Primal {3}{U}{U} (During your turn, you may cast this spell for {3}{U}{U} instead of playing a land.)
Draw a card for each land you control, then discard that many cards unless this spell was cast for its primal cost.

({T}: Add {R} or {G}.)
Practice Range enters tapped unless you control two or more basic lands.

Whenever Bound Apparition becomes the target of a spell or ability, put a -1/-1 counter on it.

Flying
When Champion's Steed enters, put a flying counter on target Avatar you control without flying.

{T}: Add {C}.
{T}, Pay 1 life: Add {B} or {G}.

You may look at the top card of your library any time.
Once each turn, you may cast an instant or sorcery spell from the top of your library.
{4}{R}: Transform Paranormal Convergence. Activate only as a sorcery and only if the total number of instant and/or sorcery cards you own in exile and in your graveyard is seven or more.