Urza, Lord High Artificer [Commander Masters] Year of the Tiger 2022 while increasing the mana base

while increasing the mana base with Thawing Glaciers

Set: Onslaught Type: Land Rarity: Uncommon Cost: {T}: Add {C}

Untap them

Set: Junior Super Series Type: Creature — Phoenix Rarity: Rare Cost: {4}{R} Flying (This creature can't be blocked except by creatures with flying or reach

Urza, Lord High Artificer [Commander Masters] Year of the Tiger 2022 while increasing the mana baseSet: Commander Masters Type: Legendary Creature Human Artificer Rarity: Mythic Cost: {2}{U}{U} When Urza, Lord High Artificer enters the battlefield, create a 0 0 colorless Construct artifact creature token with "This creature gets +1 +1 for each artifact you control." Tap an untapped artifact you control: Add U. 5: Shuffle your library, then exile the top card. Until end of turn, you may play that card without paying its mana cost.