While we don't see it becoming as problematic as Cori-Steel Cutter and meeting the same fate on the MTG banlist, this thing spits out danger constantly, and your opponent will hate seeing it on the field

Luffy (Parallel SR Alt Art) - Romance Dawn [OP01-024] Magikarp - Pokmon Card 151 (Special Art Rare) [080/165] Team Skull Grunt - Sun & Moon: Burning Shadows (Gold Full Art Trainer) [167/147] MORE FROM POKMON Mew ex Special Art Rare - Pokmon Card (Japanese) Cavallone Tropicale (Tropical Tidal Wave) - Italian 2006 World Championships Promo #36 Blaziken VMAX (Secret Rare - Alternate Art) [Chilling Reign 201/198] M Charizard EX - Flashfire (Secret Rare) [108/106] Blaziken VMAX (Alternate Art Secret Rare) [Chilling Reign 201/198] Paldean Wooper - Paldean Fates (Special Illustration Rare) [PAL EN 221/193] MORE BY MITSUHIRO ARITA Charizard - 20th Anniversary Expansion Pack (Holo Rare) [011/087 R CP6] Gardevoir EX (Full Art) - XY BREAKpoint [116/114] Koffing LV.13 60 HP - Evolutions (Common/Reverse Holo) [68/108] Zubat - Team Rocket (1st Edition) [70/82] Venusaur - Celebrations (Classic Collection) [15/102] Dewgong - Aquapolis (Common) [29/103] ABOUT TRADING CARDS Pokemon cards, sports cards, gaming cards, TCGs, and collectible card games

For example, if the effect of "Chaos Sorcerer" or "Number 9: Dyson Sphere" is negated by "Light and Darkness Dragon", it cannot activate its effect again during that turn or Battle Step (respectively)
Summoner's Grimoire
Even playing it on turn two is good, and things really just scale from there
Also, whats your favourite commander