By putting it on to Tidewater Minion, who taps to untap a target permanent, we can untap any mana sources we like as many times as we need
Aside from basic lands, you are only allowed one copy of each card in the deck
Here are the top 3 chase cards from the Japanese Scarlet and Violet Pokemon 151 expansion
With these two out at once, you get some really cool synergy
Creature - Leviathan Auspicious Starrix Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own
It offers the player, for a low mana cost, 1GWB, the ability to look at the top card of their library at any time and cast aura and equipment spells from the library