In limited, this would bring the game to top deck mode very quickly. Seems problematic at common and in two colors specifically. Maybe have this at Uncommon and in black only? What is the thinking behind having this in white as well? The fact that it would be powerful with madness doesn't seem like ...

Fribit, Planar Explorer 1{g/u} Legendary Creature - Frog (R) Haste Fribit, Planar Explorer can't block and can't be blocked. When Fribit, Planar Explorer attacks, roll the Planar die. If chaos ensues this way, create a Treasure, Food, and Map token. Choose an opponent at random. That player gains co...

Time Sieve 2U Enchantment (U) At the beginning of your upkeep, scry X, were X is one plus the number of time counters on all permanents and suspended cards. When Time Sieve enters the battlefield, add or remove X time counter from target permanent or target suspended card, where X is one plus the n...