Goblinslide

Spell-count payoffs are an old idea, but most of them reward you for the spell itself: Young Pyromancer mints its token the moment you cast any instant or sorcery, no strings attached. This one charges a tax. Whenever you cast a noncreature spell, the enchantment triggers, and that trigger goes on the stack above the spell that caused it, asking for an extra before the spell ever resolves. That ordering turns each turn into a sequencing puzzle: hold up the spare mana for a body, or commit it to a second spell and forgo the Goblin? The recurring toll is the lever that keeps an enchantment-based token engine from snowballing freely, since every body costs real mana on top of the spell you were already casting. The haste rider matters because the tokens arrive mid-turn: a Goblin made during your precombat main phase has summoning sickness like any fresh creature, so haste is the only thing that lets it swing the turn it appears. Cast the enabling spell early enough and you get to declare that Goblin as an attacker the same turn; without haste it would have to wait out the sickness. The design points at a low-curve spells deck dense enough to fire the enchantment repeatedly while leaving floating mana to convert most turns: a build constraint that has always made it more compelling on paper than dependable in practice.