You have no maximum hand size. At the beginning of your upkeep, if you have exactly thirteen cards in your hand, you win the game. {3}{U}: Draw a card.
Whenever a creature you control becomes blocked, you may return it to its owner’s hand. Whenever one or more creatures you control deal combat damage to a player, draw a card.
Choose one — • Counter target spell with mana value less than or equal to the number of cards in its controller’s graveyard. • Destroy target creature with mana value less than or equal to the number of cards in its controller’s graveyard.
Flying Cumulative upkeep—Gain control of a land you don’t control. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) Herald of Leshrac gets +1/+1 for each land you control but don’t own. When Herald of Leshrac leaves the battlefield, each player gains control of each land they own that you control.
Flying, deathtouch, lifelink Nighthawk Scavenger’s power is equal to 1 plus the number of card types among cards in your opponents’ graveyards.
Whenever an opponent draws a card, Fate Unraveler deals 1 damage to that player.
Whenever a creature you control attacks, defending player loses 1 life and you gain 1 life. {3}{R/W}{R/W}: Creatures your opponents control block this turn if able, and you choose how those creatures block.
Fabricate 3 (When this creature enters, put three +1/+1 counters on it or create three 1/1 colorless Servo artifact creature tokens.) Whenever an artifact you control is put into a graveyard from the battlefield, target opponent loses life equal to Marionette Master’s power.
Play with the top card of your library revealed. You may play lands from the top of your library. Landfall — Whenever a land you control enters, you gain 1 life.
Look at the top seven cards of your library. You may put a creature card from among them onto the battlefield. If that card has mana value 3 or less, it enters with three additional +1/+1 counters on it. Put the rest on the bottom of your library in a random order.
When Stitcher’s Supplier enters or dies, mill three cards. (Put the top three cards of your library into your graveyard.)
Ward {3} Whenever you cast your second spell each turn, copy it, except the copy isn’t legendary. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.)
Flash Whenever Thieves’ Guild Enforcer or another Rogue you control enters, each opponent mills two cards. As long as an opponent has eight or more cards in their graveyard, Thieves’ Guild Enforcer gets +2/+1 and has deathtouch.