Johnny, Combo Player

: Search your library for a card, put that card into your hand, then shuffle your library.

Rimefeather Owl

Flying
Rimefeather Owl’s power and toughness are each equal to the number of snow permanents on the battlefield.
: Put an ice counter on target permanent.
Permanents with ice counters on them are snow.

Kiri-Onna

When Kiri-Onna enters the battlefield, return target creature to its owner’s hand.
Whenever you cast a Spirit or Arcane spell, you may return Kiri-Onna to its owner’s hand.

Ghost-Lit Warder

, : Counter target spell unless its controller pays .
Channel — , Discard Ghost-Lit Warder: Counter target spell unless its controller pays .

Johnny, Combo Player

: Search your library for a card, put that card into your hand, then shuffle your library.

Callous Deceiver

: Look at the top card of your library.
: Reveal the top card of your library. If it’s a land card, Callous Deceiver gets +1/+0 and gains flying until end of turn. Activate this ability only once each turn.

Junkyo Bell

At the beginning of your upkeep, you may have target creature you control get +X/+X until end of turn, where X is the number of creatures you control. If you do, sacrifice that creature at the beginning of the next end step.