These are do nothing cards on their own and so have to put in that bit more work to be worth running when compared to a card like Yahenni
I think even a single target Replenish would put serious constraints on the format and the types of designs WotC could safely make
This deck is sort of like a muted Blood Pod list with plenty of early interaction, card advantage, and ways to pull ahead
Outside of token and squirrel decks, this is probably the weakest mode, but with synergies it can be just as strong as the others depending on the payoffs
Based on the latest market prices tracked on TCG Stacked, Goblin Surprise is worth about $0.17 USD
When Terra, Magical Adept enters the battlefield, it triggers, causing you to mill five cards and return up to one enchantment card from among them from your graveyard to your hand