Alright, got to do a few of my puns!
LEVEL 6 - DIPLODOCUS POCUS
(COOKING UP SOMETHING): When this card takes damage, put a number of counters on it equal to the amount of damage taken.
IT'S NOT READY YET!: This card gains Levels equal to half of the counters on it. Take out all counters.
BIG MAGIC: Deal damage up to twice the amount of counters on this, distributed among any cards. Take out all counters.
Basically a cannon that you need to charge up. A good technique would probably be to not attack it at all, but the player could technically attack it with their own cards and use it more carefully.
LEVEL 4 - ARCANEOPTERYX
(SOUL STAFF): When this card defeats another card, one card you control may gain 1 Level.
FELL SWOOP: Deal 1 damage to up to 3 cards of Level 1 or lower.
A cleaner/scavenger basically, really nice against swarms, and can help bulk up your big dinos (or themself!)
LEVEL 0 - MYRIADISCHIA
(COLORFUL ARRAY): Whenever you play a card of Level 1 or lower, you may attach it to this card. Attached cards cannot use any Abilities or be targeted. Whenever this card takes damage, instead discard an attached card.
(PACK HUNTING): This card may act a number of times equal to the amount of cards attached to it.
NIBBLE: Deal 1 damage. Can be prevented, not reduced.
A little weird idea of making mirischias into colored sprite-imps that swarm up but without exposing themselves to multiple target threats. Also it might be worded a little ambiguously in some parts, I hope it's understood or at least the mystery is fun.