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.)
Counter target spell. Create X Treasure tokens, where X is that spell’s mana value. (They’re artifacts with “{T}, Sacrifice this artifact: Add one mana of any color.”)
Search target opponent’s library for an artifact card and put that card onto the battlefield under your control. Then that player shuffles.
Whenever an opponent casts a spell, you may exchange control of Perplexing Chimera and that spell. If you do, you may choose new targets for the spell. (If the spell becomes a permanent, you control that permanent.)
End the turn. (Exile all spells and abilities, including this spell. The player whose turn it is discards down to their maximum hand size. Damage heals and “this turn” and “until end of turn” effects end.)
Surge {3}{U}{U} (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.) Return all nonland permanents to their owners’ hands. If this spell’s surge cost was paid, create an 8/8 blue Octopus creature token.
When Thousand Moons Smithy enters, create a white Gnome Soldier artifact creature token with “This creature’s power and toughness are each equal to the number of artifacts and/or creatures you control.” At the beginning of your first main phase, you may tap five untapped artifacts and/or creatures you control. If you do, transform Thousand Moons Smithy.
{R}: All creatures gain trample and haste until end of turn. {1}{G}: Put a +1/+1 counter on target creature. {2}{W}: Target player gains 5 life. {3}{U}: Target player draws a card. {4}{B}: Put target creature card from a graveyard onto the battlefield under its owner’s control.