Meanwhile, either side effectively protects your ability to combo, and as mentioned before, Cavern on Wizard works here and with

$0.49 The Seventh Doctor (0558 - Traditional Foil - Showcase) Universes Beyond: Doctor Who Variants $0.99 The Fourth Doctor (0555 - Traditional Foil - Showcase) Universes Beyond: Doctor Who Variants $7.99 The Tenth Doctor (0561 - Traditional Foil - Showcase) Universes Beyond: Doctor Who Variants $0.49 The Third Doctor (0554 - Traditional Foil - Showcase) Universes Beyond: Doctor Who Variants $2.99 The Thirteenth Doctor (0564 - Traditional Foil - Showcase) Universes Beyond: Doctor Who Variants $0.49 The Fugitive Doctor (0541 - Traditional Foil - Showcase) Universes Beyond: Doctor Who Variants $1.49 The War Doctor (0548 - Traditional Foil - Showcase) Universes Beyond: Doctor Who Variants $0.99 The Sixth Doctor (0557 - Traditional Foil - Showcase) Universes Beyond: Doctor Who Variants $2.49 The Twelfth Doctor (0563 - Traditional Foil - Showcase) Universes Beyond: Doctor Who Variants $0.49 The Eighth Doctor (0559 - Traditional Foil - Showcase) Universes Beyond: Doctor Who Variants $1.99 The Ninth Doctor (0560 - Traditional Foil - Showcase) Universes Beyond: Doctor Who Variants $0.49 The Fifth Doctor (0556 - Traditional Foil - Showcase) Universes Beyond: Doctor Who Variants 0 results found

If youre just starting out on your Commander journey, why not take a look at what precons we have available at Card Kingdom
While this effect could be printed on a much more serious card, the whimsical take by Draiu actually works better overall
MtG Reality Fracture COLLECTOR Booster Pack [15 Cards] (Pre-Order ships October) MtG Reality Fracture COLLECTOR Booster Pack [15 Cards] (Pre-Order ships October) PRE-ORDER Estimated ship date $49.99 NOTIFY ME WHEN AVAILABLE Email address submitted
You can then tap it and remove it the counter on it to add the exact amount of mana you spent to attach the counter and card in the first place, and then that mana can only be used to cast the card attached to Ice Cauldron