msem-instigator

Look at target opponent's hand, then fateseal 1. (To fateseal 1, look at the top card of an opponent's library, then you may put it on the bottom of that player's library.)

Whenever Infernal Barrier is dealt damage, it deals 1 damage to each opponent.

When Cobbled Currency enters the battlefield, discard a card, then draw a card.
{3}, Sacrifice Cobbled Currency: Discard two cards, then draw two cards.

Whenever another Goblin you control attacks, you may pay {1}. If you do, it gets +1/+0 until end of turn.

Enchant creature
Enchanted creature gets +3/+0 and has menace.

Whenever a permanent an opponent controls becomes the target of a spell you control, put a progress counter on Throne of the West.
[PROGRESS 2+] {T}: Gain control of target permanent until end of turn. Untap it. It gains haste until end of turn.
[PROGRESS 5+] You can't lose control of permanents.

Until end of turn, creatures you control gain “Creatures with power less than this creature's power can't block it.”

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

Search your library for a creature card, reveal it, then shuffle and put that card second from the top.

Search your library for up to two basic land cards, reveal them, put them into your hand, then shuffle.
You may put up to two land cards from your hand onto the battlefield tapped.

When Kinken, the Dragon's Breath enters the battlefield, draw a card, then choose a creature card name.
Whenever a creature you control with the chosen name attacks, you may pay {1}. If you do, create a token that's a copy of it and that's tapped and attacking, except it isn't legendary. Exile the token at the beginning of the end step.

Flying
When Calamity Harbinger enters the battlefield, it deals 4 damage to up to one target creature or planeswalker.

Vanishing 1 (This permanent enters the battlefield with a time counter on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
When the last time counter is removed from Conspiracy of Ravens, target player reveals their hand. You choose a nonland card from it. That player discards that card.

Equipped creature gets +1/+1 for each differently named land you control.
Equip {3}

When Njel Crocodile enters the battlefield, you may have it fight target creature. (Each deals damage equal to its power to the other.)

Prevent all combat damage that would be dealt to attacking creatures you control.

Enchant creature
Enchanted creature can't be blocked.
{1}{G}: Enchanted creature gets +1/+1 and gains hexproof until end of turn.

When Truthseeker's Blade enters the battlefield, it deals 2 damage to target creature you don't control.
Equipped creature gets +2/+0.
Equip {3}

Enchant creature
Enchanted creature gets +3/-2.

Vigilance
When Tortle Guard enters the battlefield, it explores. (Reveal the top card of your library. Put it into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then you may put that card in your graveyard.)

Flash
Other Rogues you control get +1/+1.
Rogue spells you cast have flash.

First strike
Each other nontoken creature you control enters the battlefield with an additional +1/+1 counter on it.

The Urchin King's power and toughness are each equal to the number of cards in all graveyards.
Sacrifice a creature: The Urchin King gains lifelink and indestructible until end of turn.

Flash
When Master of Disorientation enters the battlefield, you may choose new targets for target instant or sorcery spell. Then proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

Whenever you cast a noncreature spell, upgrade Indecisive Sorceress. When you can't, remove all counters from it and it deals damage to any target equal to the number of counters removed this way.
• +1/+1
• Flying
• First strike