The entire premise is pretty straightforward, even for a blue deck: Well play Talrand, Sky Summoner as soon as were confident we can protect it with Counterspells, then control the board with countermagic until weve amassed a cawing flock of Drake tokens to beat face with
Yargle and Multani Ive heard much about you from my daughter, Multani rumbled
We've known for months that there would be a Sliver precon, but buying cards like Sliver Legion (Secret Lair Extra Life 2022 - Said) and Sliver Hive felt risky because they could show up in the premium-priced precon
Just combine him with blink and flicker effects like Soulherder and Deadeye Navigator, and Rasputin will always be available to crank out colorless mana
Depending on how the format breaks and where you want edge, you could potentially maindeck a card like this
Haldan lets you cast noncreature spells from exile that have fetch counters on them, and you can spend any kind of mana to cast them