Gift a card causes them to draw a card, and Gift a tapped Fish causes them to create a tapped 1/1 blue Fish creature token
Soul Sisters is one of the only decks in the format that can afford to play a full set of Ghost Quarters and it is awesome
Whenever a damaged character challenges another character, you get to draw a card
Instead, I recommend embracing the scrappiness of having a restricted card pool and go for a generalized approach to counters, picking and choosing the very best of each type be they brick, charge, loyalty, poison, or any other kind of counter
The Gitrog Monster is a great example of this, forcing you to sacrifice a land or sacrifice itself, the upside is you get to play an extra land each turn
However, through strategic use of time, players can acquire resources to get these powerful cards