Twiddle

You may tap or untap target artifact, creature, or land.

Riku of Two Reflections

Whenever you cast an instant or sorcery spell, you may pay {U}{R}. If you do, copy that spell. You may choose new targets for the copy.
Whenever another nontoken creature you control enters, you may pay {G}{U}. If you do, create a token that's a copy of that creature.

Brain Freeze

Target player mills three cards.
Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

Have

Getting

Don't Have

{"ops":[{"insert":"Riku mostly because color but the effects are neat and are helpful\n"}]}