The loop is infinite, and thanks to the word may on this card you can just say they each have 11 million +1/+1 counters to end the madness

Beast Whisperer Whenever you cast a creature spell, draw a card Elder Gargaroth Vigilance, reach, trample Whenever Elder Gargaroth attacks or blocks, choose one Create a 3/3 green Beast creature token You gain 3 life Draw a card Ohran Frostfang Attacking creatures you control have deathtouch Whenever a creature you control deals combat damage to a player, draw a card Regal Force When Regal Force enters the battlefield, draw a card for each green creature you control Runic Armasaur Whenever an opponent activates an ability of a creature or land that isnt a mana ability, you may draw a card Toski, Bearer of Secrets This spell cant be countered Indestructible Toski, Bearer of Secrets attacks each combat if able Whenever a creature you control deals combat damage to a player, draw a card Non-Budget Enchantment Decks If you are playing an enchantment-focused deck, these are nearly mandatory inclusions to ensure you green card draw strategy

Until next time, may all your decks remain unbanned (unless you play mill, of course)
Itll also be an investigate machine, allowing you to create Clues whenever creatures die, are blinked, or exiled, and that makes it a very strong fit in Azorius creature decks including Brago, King Eternal, Yorion, Sky Nomad, and the like
Opening the Vault rewards you with additional wildcards