Whenever you cast your first spell during each opponent's turn, put a +1/+1 counter on Arena Trickster.

Whenever an opponent shuffles their library, you may put a +1/+1 counter on Cosi's Trickster.

Flying

When Frost Trickster enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

At the beginning of your end step, if you have the initiative, draw a card. Draw another card if you've completed a dungeon.

Choose a Background (You can have a Background as a second commander.)

Flash

Flying

Whenever you cast your first spell during each opponent's turn, look at the top two cards of your library. Put one of those cards into your hand and the other into your graveyard.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I — You may exchange control of two target creatures.

II — You may exchange control of two target nonbasic, noncreature permanents that share a card type.

III — Target player loses 3 life and you gain 3 life.

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.)

Enchanted creature loses all abilities and is a green Elk creature with base power and toughness 3/3.

Flash

, Return an unblocked attacking Rogue you control to its owner's hand: Put Zareth San, the Trickster from your hand onto the battlefield tapped and attacking.

Whenever Zareth San deals combat damage to a player, you may put target permanent card from that player's graveyard onto the battlefield under your control.