msem-instigator

[+2]: Until end of turn, you may spend mana as though it were mana of any type.
[0]: For each color, put a +1/+1 counter on a creature you control of that color.
[–7]: For each color, search your library for up to one creature card of that color. Put those cards onto the battlefield, then shuffle.

You draw two cards and you lose 2 life. Each opponent draws a card.

When Artisan's Genius enters, you may tap three untapped artifacts or other enchantments you control. If you do, draw three cards.
{5}{W}{U}, Exile Artisan's Genius: Return any number of artifact or enchantment cards with different names from your graveyard to your hand.

Reach
Once each turn, when Canopy Dancer deals damage, you may untap it.

Flying
Tap two untapped creatures you control: Skymount Commander gains double strike until end of turn.

Flying
Nectarkin enters with a +1/+1 counter on it.
Whenever Nectarkin deals combat damage to a player, permutate. (You may remove a counter from a creature you control. If you do, put two +1/+1 counters on a different creature you control.)

As an additional cost to cast this spell, discard a card at random.
Draw three cards.

Haste
Whenever Malformed Mongrel deals combat damage to a player, discard a card.

Nilchain Altar enters tapped.
{T}: Add {W} or {B}.
{W}{B}, {T}, Sacrifice Nilchain Altar: Conjure a card named Data-Point into your hand. (It's a sorcery that costs {2} with “Draw a card.”)

You may have Mutalithic Golem enter as a copy of any land on the battlefield, except it's an artifact in addition to its other types.

Strange Harbor enters tapped unless you have 15 or less life.
{T}: Add {U} or {R}.

When AOSE Extractor enters, crystallize. (Put a +1/+1 counter on a creature you control or create a Treasure.)

Flying, ward {3}
Inspired — Whenever Wang Xi becomes untapped, choose a nonbasic card name, then reveal the top five cards of your library. Put all cards with the chosen name from among them into your hand and the rest on the bottom of your library in any order.

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.

Reach
Improve {1}{G/W} ({1}{G/W}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on that creature instead.

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.

Concord — When Riptide Mystic enters, if there are four or more card types among permanents you control, you may return target nonland permanent to its owner's hand.

When Climbing the Oldest Mountain enters, draw a card, then choose a card name.
Whenever a creature you control with the chosen name deals combat damage to a player, put two +1/+1 counters on it.

Whenever a creature you control enters, you may have it get +1/+1 until end of turn. If you do, it fights target creature. (Each deals damage equal to its power to the other.)

When Undying Watcher enters, germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)
Sacrifice another creature: Undying Watcher gains indestructible until end of turn.

Whenever a player discards a card, you may draw a card and put a loyalty counter on Mei Liva, the Broken.
[0]: Target permanent's controller sacrifices it unless they discard two cards.
[–1]: Each opponent loses X life and you gain X life, where X is the number of cards in your hand.
[–3]: Target player chooses a card in their hand, then discards the rest.

Counter target spell unless its controller pays {2}. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Flash
Flying
When Meletis Stratomancer enters, target creature an opponent controls gets -2/-0 until end of turn.

Each nonland permanent loses all abilities until end of turn.
Draw a card.

When Prodigious Telemancer enters, you may draw a card, then discard a card.
Whenever you cast an instant or sorcery spell, you may aetherize target creature you control. (To aetherize, create a token that's a copy of it, then exile that token.)