msem-instigator

Once each turn, when you sacrifice a permanent, you may put two progress counters on Ceaseless Research and surveil 2.
{2}{G}, Remove X progress counters from Ceaseless Research: Create an X/X green Mutant creature token. X can't be less than 3. Activate only as a sorcery.

(Choose only one work as a sorcery to add its ability.)
When Celebrations of Ferocity enters, add {R}{G}. Spend this mana only to cast creature spells.
{4}{R}{R}: Hao'Tai's Wake
At the beginning of combat on your turn, target creature you control becomes a 4/4 red Dragon with flying until end of turn.
{1}{G}: Portrait of Qiyan
Creatures you control enter with an additional +1/+1 counter on them.

Equipped creature gets +3/+3.
Prevent all combat damage that would be dealt to equipped creature.
Equip {3}

When Celestial Scythe enters, attach it to target Angel, Demon, Faerie, or Spirit you control.
Equipped creature gets +2/+1.
Equip {2}

Haste
Whenever this creature attacks, you may discard a card. If you do, draw a card.

Exile the top two cards of your library. Until the end of your next turn, you may play one of those cards, or both if this spell was foretold.
Foretell {R} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Whenever you cast a Dwarf or Elf spell, exile the top card of your library. You may play it this turn.
Whenever you cast your third spell each turn, Celitiene deals 2 damage to any target. If you control a Dwarf, Celitiene gets +2/+2 and gains trample until end of turn. If you control another Elf, you gain 2 life.

Trample
{4}{G}: Centaur Warband gets +2/+2 until end of turn.

{T}: Add {C}.
Civilized — {T}: Add {C}{C}. Activate only if you control an artifact, a creature, and an enchantment.

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Whenever Centipede Engine attacks, you may have target creature block it this turn if able.

Wu Xing (Add effects based on the number of colors of mana spent to cast this spell.)
1 | Target creature you control deals damage equal to its power to target creature or planeswalker.
3 | Draw a card.

Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
Equipped creature gets +2/+0.
As long as you're in a renaissance, equipped creature has first strike.
Equip {3}

Legacy (You may play this side of this card only from your graveyard. Exile it if it would be put into a graveyard or not resolve.)
Shuffle any number of target cards in graveyards into their owners' libraries.
Scry 2, then you gain 3 life.

Chain of Decimation deals 4 damage to target creature, 3 damage to two other target creatures, 2 damage to three other target creatures and 1 damage to four other target creatures. (You can't cast Chain of Decimation unless it has ten targets.)

Chained Greatwolf enters with a defender counter on it.
{3}{G}{G}, Remove a defender counter from Chained Greatwolf: Chained Greatwolf gets +5/+5 and gains trample until end of turn. Activate only during your turn.

Defender, trample
As long as you control a creature with power greater than its base power, Chained Minotaur can attack as though it didn't have defender.

Chained Wildborn can't attack or block alone.

Creatures entering, dying, or leaving the battlefield don't cause abilities to trigger.
Players can't sacrifice creatures to cast spells or activate abilities.

Haste
Winnow (Damage dealt to this creature also causes you to lose that much life.)

Whenever a creature an opponent controls becomes tapped, put a +1/+1 counter on Chalkira Duelist.

Whenever a permanent enters under an opponent's control, reveal the top card of your library. If it's a permanent card that shares a type with that permanent, you may put it onto the battlefield. Otherwise, put it on the bottom of your library.

Haste
When Challenging Pupil enters, conjure a card named Fatigue and put it on top of your library. (It's a colorless sorcery that costs {2} with “Draw a card.”)

{T}: Add {C}.
{T}: Add one mana of any color among creatures and planeswalkers you control.
{T}: Target player may gain control of target permanent you own. (That player may choose not to.)

When Chamber of Reflections enters, draw a card, then choose a legendary card name.
Permanents you control with the chosen name have hexproof and the “legend rule” doesn't apply to them.