Opposition [Urza's Destiny] SM21 if all of your characters

if all of your characters are "World of Avatar"

Set: Commander Masters Type: Legendary Artifact Rarity: Mythic Cost: {7}{G}{G} This spell costs X less to cast

and you have another "Britannia" character

Set: Gym Heroes Unlimited Type: Water Rarity: Uncommon Retreat cost: Colorless

[AUTO][(1)] When a climax is put on your climax area

Opposition [Urza's Destiny] SM21 if all of your charactersSet: Urza's Destiny Type: Enchantment Rarity: Rare Cost: {2}{U}{U} Tap an untapped creature you control: Tap target artifact, creature, or land. "Urza says he's sane. Perhaps, but measures of sanity among planeswalkers are hard to come by." Barrin