Fine for a binder copy, but not for a high-grade submission
Artifact Liliana of the Dark Realms +1: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle
Like wall-tribal staples such as High Alert and Assault Formation, Arcades allows creatures with defender to deal damage via their toughness rather than their power and allows them to attack as though they didn't have defender
The rules treat that the same way as a normal regeneration shield, but its set up by a static effect
Deharme Many people see black as a source of evil in MTG, but thats not what black is
There are also legends that dont directly call out X-spells but offer the kind of cost reduction that facilitates playing X-spells way more easily than normal