"Jon Foster" (19)
Whenever an opponent discards a card, Abyssal Nocturnus gets +2/+2 and gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)
Remove a +1/+1 counter from Arcbound Reclaimer: Put target artifact card from your graveyard on top of your library.
Modular 2 (This creature enters with two +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)
Whenever Bioplasm attacks, exile the top card of your library. If it's a creature card, Bioplasm gets +X/+Y until end of turn, where X is the exiled creature card's power and Y is its toughness.
: Look at the top card of your library.
: Reveal the top card of your library. If it's a land card, Brutal Deceiver gets +1/+0 and gains first strike until end of turn. Activate only once each turn.
Enchant artifact creature
You control enchanted artifact creature.
Dragonskull Summit enters tapped unless you control a Swamp or a Mountain.
: Add or .
Counter target creature spell.
Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Choose target card in a graveyard other than a basic land card. Search its owner's graveyard, hand, and library for all cards with the same name as that card and exile them. Then that player shuffles.
Flying
When Gossamer Phantasm becomes the target of a spell or ability, sacrifice it.
Shadow (This creature can block or be blocked by only creatures with shadow.)
Suspend 2— (Rather than cast this card from your hand, you may pay and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.)
At the beginning of your upkeep, sacrifice Kuro, Pitlord unless you pay .
Pay 1 life: Target creature gets -1/-1 until end of turn.
Target player reveals their hand. You choose a nonland card from it. That player puts that card into their library third from the top.
As an additional cost to cast this spell, sacrifice an artifact.
Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.
Resounding Thunder deals 3 damage to any target.
Cycling (, Discard this card: Draw a card.)
When you cycle Resounding Thunder, it deals 6 damage to any target.
Trample
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Shah of Naar Isle's echo cost is paid, each opponent may draw up to three cards.
Shock deals 2 damage to any target.
Flip a coin. If you win the flip, take an extra turn after this one.
Devour 2 (As this enters, you may sacrifice any number of creatures. This creature enters with twice that many +1/+1 counters on it.)
: Thorn-Thrash Viashino gains trample until end of turn.
Target player takes an extra turn after this one.
Gatherer works better in the Companion app!