Creature - Spirit Color tag templates(None) Delney, Streetwise Lookout Creatures you control with power 2 or less can't be blocked by creatures with power 3 or greater
University Magikarp (CoroCoro, 1998) The University Magikarp may look quirky, but dont be fooled this is one of the most prestigious promo cards ever released in Japan
Canoptek Wraith
Pyroclasm is great on paper, but a lot less great if the opponent is holding a Mutagenic Growth in reserve (yeah, they waste the Growth, but no, the Agent is still there)
For this, I mostly use the TCG Market price (minus 15% for fees and shipping), which is basically the completed listings of the TCG Marketplace and shows the actual prices that cards have sold for, and not just what people are asking for their cards
Green decks could also pull off some broken plays with Ol' Strippy