While it might seem like a vote of confidence for aftermath that it is based on one of the most playable mechanics of all time, even discounting the actual text printed on the card (which we'll talk about in a few minutes), the very design of aftermath makes it less powerful than flashback
Tergrid, God of Fright is the commander for you
Red has access to fifteen cards with a dice rolling theme, and blue has thirteen, which is plenty to fill your deck with ways to turn Wyll into a formidable threat
(It can't be blocked, targeted, or dealt damage by anything that's white, blue, black, red, or green.) Enchantment - Aura Color tag templates(None) Sphere of Safety Creatures can't attack you or planeswalkers you control unless their controller pays for each of those creatures, where X is the number of enchantments you control
If you remove the last time counter from a suspended card this way, you will cast that card
My favorite is in an Ashling the Pilgrim deck, where you can combine Ashling with a Basilisk Collar and the Scythe to wipe the entire board each turn, returning every creature destroyed to the battlefield under your control