Fists of Ironwood
Enchantment — Aura
Enchant creature
When this Aura enters, create two 1/1 green Saproling creature tokens.
Enchanted creature has trample.
Saprolings add the three and the four to the "one-two punch."
Glen Angus
Rulings
The Saproling tokens aren't created until after Fists of Ironwood is on the battlefield, so you can't cast Fists of Ironwood on one of those tokens.
(wotc • 2017-03-14)
If the target creature is an illegal target when Fists of Ironwood tries to resolve, Fists of Ironwood won't resolve and won't enter the battlefield. You won't create Saproling tokens.
(wotc • 2017-03-14)
You create the Saproling tokens, even if Fists of Ironwood enters the battlefield attached to another player's creature.
(wotc • 2017-03-14)
Rulings
The Saproling tokens aren't created until after Fists of Ironwood is on the battlefield, so you can't cast Fists of Ironwood on one of those tokens.
(wotc • 2017-03-14)
If the target creature is an illegal target when Fists of Ironwood tries to resolve, Fists of Ironwood won't resolve and won't enter the battlefield. You won't create Saproling tokens.
(wotc • 2017-03-14)
You create the Saproling tokens, even if Fists of Ironwood enters the battlefield attached to another player's creature.
(wotc • 2017-03-14)