[@Jangel13]

Not ammokkx don't know the exact details but

from the wiki it has been gathered this

During each of either player's Standby Phases, 1 Speed Counter is placed on both player's "Speed World"; although in the anime a Speed Counter is not placed on the first turn, in video games featuring Turbo Duels, it is. There are also cards which can either decrease or increase the number of Speed Counters on "Speed World".

There are even cards that can prevent either player from accumulating Speed Counters. When you take damage, for each multiple of 1000 damage you take, you lose 1 Speed Counter. With "Speed World 2" however, you don't.

so basically a field spell is played and every standby phase you gain a speed counter which continues to rise unlock more spells for you to use but you gotta pay a cost.