The fully opaque backing ensures your cards remain hidden from view, making them ideal for organized play in trading card games (TCG) and maintaining fairness during matches
Unlike cards like Swing of Memories or Silvers Cry , theres no once per turn limitations, you arent restricted to Summoning only Normal Monsters and the monster you bring back is permanent
Also of note: up to this point, most Auras entering the battlefield didnt have an enters the battlefield effect unless it was directly tied to what the card was doing (Sleeping Potion taps the creature when it enters in order to keep it tapped) or just a normal cantrip, which many spells in the game were doing
Os comentadores especulam que, como resultado, ele pode ser uma fora a ser considerada
TCG ban list
Sangen Summoning has a Continuous Effect that makes FIRE Dragon monsters you control becomes unaffected by your opponents activated effects during your Main Phase 1, which also makes it much more tricky to disrupt Tenpai Dragon