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Should the opponent managed to stop the loop, the deck would ended up struggling to recover their disadvantagous position had they were not able to search and activate a copy of either "Welcome" or "Big Welcome"

Sometimes the simplest way to help everyone out is to give them more mana, and while there are lots of ways to do this, Heartbeat of Spring is one of the best, especially at three mana

Dedicated trade channels make it easy to connect

Whenever a creature enchanted by an Aura with umbra armor would be destroyed, you instead remove all damage and destroy the Aura, so targeted destroy-based removal spells are no longer a 2-for-1