Before And After
A classic mana dork; a cEDH staple card draw engine
Burst Lightning
Kicker
Borborygmos Enraged
Trample
Whenever Borborygmos Enraged deals combat damage to a player, reveal the top three cards of your library. Put all land cards revealed this way into your hand and the rest into your graveyard.
Discard a land card: Borborygmos Enraged deals 3 damage to any target.
Curiosity
Niv Mizzet Parun/The Firemind (Bonus points if you said Glint-Horn Buccaneer with 8 cards in hand)
"When you cast this spell, you gain control of target opponent during that player’s next turn. After that turn, that player takes an extra turn."
Emrakul, the Promised End
A piece of the Power Nine; a green Bear-hugging shaman
Ancestral ReCaller of the Claw
Tooth and Nail
Entwine
Ulamog, the Infinite Gyre
When you cast this spell, destroy target permanent.
Indestructible
Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents of their choice.)
When Ulamog is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.
Devoted Druid
Luxior/Swift Reconfiguration/Vizier of Remedies/Quillspike
"When this creature enters, exile target creature an opponent controls until an opponent becomes the monarch."
Palace Jailer
A land-abusing Fog; a hydra with protection from blue
Constant MistCutter Hydra
Rush of Dread
Spree
Starfield of Nyx
At the beginning of your upkeep, you may return target enchantment card from your graveyard to the battlefield.
As long as you control five or more enchantments, each other non-Aura enchantment you control is a creature in addition to its other types and has base power and base toughness each equal to its mana value.
Deciever Exarch/Pestermite
Splinter Twin/Kiki-Jiki
"Whenever this creature attacks, exile the top card of your library. If you’ve completed a dungeon, you may play that card this turn without paying its mana cost. Otherwise, you may play that card this turn."
Caves of Chaos Adventurer
A popular commander sweeper; a burn spell on layaway
Cyclonic Rift Bolt
Flowerfoot Swordmaster
Offspring
Lich's Mastery
Hexproof
You can’t lose the game.
Whenever you gain life, draw that many cards.
Whenever you lose life, for each 1 life you lost, exile a permanent you control or a card from your hand or graveyard.
When Lich’s Mastery leaves the battlefield, you lose the game.
Metallic Mimic on Goblin+Skirk Prospector+?
Murderous Redcap
"Tap an untapped Wizard you control: Counter target spell unless its controller pays 1."
Patron Wizard
A very wordy green creature; a green enchantment that was a staple commander finisher
Questing BeastMaster Ascension
Grunn, the Lonely King
Kicker
Nicol Bolas, Dragon-God
Nicol Bolas has all loyalty abilities of all other planeswalkers on the battlefield.
+1: You draw a card. Each opponent exiles a card from their hand or a permanent they control.
−3: Destroy target creature or planeswalker.
−8: Each opponent who doesn’t control a legendary creature or planeswalker loses the game.
Dramatic Reversal+Walking Ballista+Grim Monolith+?
Isochron Scepter
"+1: Search your library and/or graveyard for a card named Monk of the Open Hand, reveal it, and put it into your hand. If you search your library this way, shuffle."
Grand Master of Flowers