pokemon rose card Darkness Ablaze #196 189/189 / Ultra Rare Card Type / HP / Stage Rosa | Cosmic Eclipse |

Its used in some red prison decks that use planeswalker cards like Chandra, Torch of Defiance that generates mana to rebuild faster or fast mana sources like Chrome Mox

This last synergy is one of the reasons it helped to break Jace, the Mind Sculptor in Standard

They converted this free code system to an automatic in-game bonus and toss in basic lands

However, the last part of the ability will check how much life you've gained as the ability resolves, so if you've only gained 5 life this turn by the time the end step comes around, you could still gain 2 more life while this ability is on the stack in order to return the target creature card to the battlefield instead of your hand