msem-instigator

Return target instant or sorcery card from your graveyard to your hand.
Compose (Then if you cast this from your hand, exile it and create a Saga token with “r3—You may cast a copy of this card from exile without paying its mana cost.”)

Enchant artifact or creature
When Dilapidate enters, tap enchanted permanent.
Enchanted permanent loses all abilities and doesn't untap during its controller's untap step.

When Diligent Fishermen enters, look at the top four cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Hexproof

Choose one—
• Counter target spell.
• Exile two target permanents you control, then return them to the battlefield under your control.

Put target creature into its owner's library third from the top.

[+1]: Draw two cards.
[–1]: Until your next turn, Director Amitai Eliahu gains “Other nonland permanents lose all abilities.”
[–3]: You may discard a card. If you do, you may cast a spell that shares a color with that card without paying its mana cost.
[–9]: Until end of turn, play with your library revealed. You may cast spells from your library this turn.

Counter target spell or activated ability. If an activated ability of an artifact was countered this way, put that permanent on the bottom of its owner's library.

Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)

Counter target spell. Mill three cards.

Return target artifact or creature to its owner's hand.

Instant and sorcery spells you cast cost {1} less to cast.

Search your library for up to thirteen cards, exile them, then shuffle.
Draw three cards.

Vigilance
Whenever Disgruntled Student deals combat damage to a player, scry 2.

Counter target instant spell.

Counter target spell unless its controller has you get three glory counters. (You lose glory counters before life. A player with ten or more glory counters wins the game.)

Return target nonland permanent to its owner's hand.

Defender
When Dispossessed Noble enters, draw a card.

Return up to one target creature to its owner's hand. Draw a card.
Tether (Then if you cast this from your hand, you may exile it tethered to a creature you control. When it dies, you may cast this from exile without paying its mana cost.)

Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Whenever a creature is returned to its owner's hand, draw a card.
{4}{U}{U}: Return target creature to its owner's hand.

Counter target spell. Scry 1.

Counter target spell. If that spell is countered this way, draw a card, then discard a card.

Choose one —
• Counter target creature or planeswalker spell.
• Return target creature or planeswalker to its owner's hand.

Whenever you cast your second spell each turn, you may tap target creature and put a stun counter on it.