Not only that, they could cheat around the downside Ritual Monster has by just using one Monster regardless of Level
The part where it becomes a problem is with another card in Standard: Agathas Soul Cauldron
Heliod, Sun-Crowned puts a +1/+1 counter on target creature or enchantment you control whenever you gain life, and it can give another creature lifelink until the end of the turn through a two mana activated ability
[6] More powerful DigiMemories like Omegamon, Examon, and War Greymon are able to manifest holograms by themselves, float in midair (other DigiMemories can do this when the complete set is gathered), [6] and can even use powers like opening portals between the Real and Digital Worlds, [7] restoring another inactive DigiMemory, or projecting a protective force field
Mana Curve Last but not least, let's discuss where Midrange falls into the mana curve
When a card from that era surfaces in pristine condition, it demands premium prices