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.
When Aether Hub enters, you get {E} (an energy counter). {T}: Add {C}. {T}, Pay {E}: Add one mana of any color.
Flying Wither (This deals damage to creatures in the form of -1/-1 counters.) Creatures your opponents control with counters on them can’t attack or block.
Other Dinosaurs you control have haste. When Regisaur Alpha enters, create a 3/3 green Dinosaur creature token with trample.
Whenever Slimefoot and Squee enters or attacks, create a 1/1 green Saproling creature token. {1}{B}{R}{G}, Sacrifice a Saproling: Return Slimefoot and Squee and up to one other target creature card from your graveyard to the battlefield. Activate only as a sorcery.
Spirits you control get +1/+1 and have trample and haste. Whenever another nontoken creature you control dies, exile it. If you do, create a token that’s a copy of that creature, except it’s a Spirit in addition to its other types and it has “When this creature leaves the battlefield, return the exiled card to its owner’s graveyard.”
(Gain the next level as a sorcery to add its ability.) You have no maximum hand size. {2}{U}: Level 2 When this Class becomes level 2, draw two cards. {4}{U}: Level 3 Whenever you draw a card, put a +1/+1 counter on target creature you control.
Sacrifice Cursecatcher: Counter target instant or sorcery spell unless its controller pays {1}.
Players have no maximum hand size. {X}{X}, {T}: Each player draws X cards. {2}{U}, {T}: Each opponent mills cards equal to the number of cards in their hand.
Destroy target nonland permanent. Its controller creates a 1/1 white Human creature token.
(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it’s defeated, exile it, then cast it transformed.) When Invasion of Segovia enters, create two 1/1 blue Kraken creature tokens with trample.
Flying {1}{U}, {Q}: Target opponent exiles the top card of their library. Until end of turn, you may play that card. ({Q} is the untap symbol.)
As Reflections of Littjara enters, choose a creature type. Whenever you cast a spell of the chosen type, copy that spell. (A copy of a permanent spell becomes a token.)