Enchant creatureWhen Incriminating Impetus enters, suspect enchanted creature. (It has menace and can't block.)Enchanted creature gets +2/+2 and is goaded. (It attacks each combat if able and attacks a player other than you if able.)
Menace (This creature can't be blocked except by two or more creatures.)Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)
ReachUndergrowth — When Kraul Harpooner enters, choose up to one target creature you don't control with flying. Kraul Harpooner gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard, then you may have Kraul Harpooner fight that creature.
When Duskshell Crawler enters, put a +1/+1 counter on target creature.Each creature you control with a +1/+1 counter on it has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)
Enchant creatureEnchanted creature gets +2/+2 and is goaded. (It attacks each combat if able and attacks a player other than you if able.)Whenever enchanted creature attacks, you scry 2.
FlashVigilanceWhen Scuttling Sentinel enters, put a +1/+1 counter on another target creature you control. Until end of turn, that creature becomes a blue Crab in addition to its other types and gains hexproof. (It can't be the target of spells or abilities your opponents control.)
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)When Conclave Tribunal enters, exile target nonland permanent an opponent controls until Conclave Tribunal leaves the battlefield.
FlyingWhen Watcher in the Mist enters, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)