By casting it, players can deal 2 damage, and by casting another instant with 3 mana value or more, they can cast another, reaching the 4 damage required to give you a card draw during the end step
The two top-end creatures were Spirit of the Night and Verdant Force
Okay, theres some drawbacks here
This means that effects that trigger off sacrificing creatures or even just creature deaths work pretty well with Fling
With the high starting life total and the inclusion of Commander damage, life gain strategies are not generally considered very powerful in the format
With Mirkwood Bats in play, each time a token is created or sacrificed, each opponent loses 1 life