Whenever Sidisi, Brood Tyrant enters or attacks, mill three cards.Whenever one or more creature cards are put into your graveyard from your library, create a 2/2 black Zombie creature token.
At the beginning of each player's draw step, that player draws an additional card.Whenever an opponent draws a card, Nekusar, the Mindrazer deals 1 damage to that player.
Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.)At the beginning of each of your postcombat main phases, add for each 1 life your opponents have lost this turn.
+2: Discard up to two cards, then draw that many cards.−2: Sacrifice an artifact. If you do, return target artifact card from your graveyard to the battlefield.−10: You get an emblem with "Whenever an artifact is put into your graveyard from the battlefield, return that card to the battlefield at the beginning of the next end step."Daretti, Scrap Savant...
Constellation — Whenever an enchantment you control enters, you may put a land card from your hand onto the battlefield tapped. If you control six or more enchantments, instead you may put a creature or land card from your hand onto the battlefield tapped.
FlyingDethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)Whenever Scourge of the Throne attacks for the first time each turn, if it's attacking the player with the most life or tied for most life, untap all attacking creatures. After this phase, there is an additional combat phase.
Sliver creatures you control have afflict 2. (Whenever a creature with afflict 2 becomes blocked, defending player loses 2 life.)Whenever a nontoken Sliver you control dies, amass Slivers 2. (Put two +1/+1 counters on an Army you control. It's also a Sliver. If you don't control an Army, create a 0/0 black Sliver Army creature token first.)
Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.)At the beginning of each of your postcombat main phases, add for each 1 life your opponents have lost this turn.
Each player shuffles their hand and graveyard into their library, then draws seven cards. If it's your turn, end the turn. (Exile all spells and abilities from the stack, including this card. Discard down to your maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.)