You can only activate 1 "Over Fusion" per turn
Special Summon all excavated Level 4 or lower monsters in face-down Defense Position, also send the remaining cards to the GY
Free things are great, sure, but this mechanic also instills a weird sort of fear of missing out that makes you feel like you're almost losing money by not logging in for a single day
Every time you pay 4 life the next time Library activates it will be giving you more information and better card quality than it otherwise would much like having a shuffle effect
Card Text: Red spells you cast cost less to cast
For example, this means that normally, if you control Hunting Velociraptor, you can cast Grim Giganotosaurus for its prowl cost only if a Dinosaur dealt combat damage to a player, but if an effect causes the spell to have other creature types, the prowl ability is also satisfied by a creature with those additional types having dealt combat damage to a player