He'd ETB because of Goryo, then be sac'd at EOT, then undying would cause him to ETB again, and the persist counter and undying counter would cancel, so you'd be free to kill woodfall again for his trigger indefinitely
Jim Davis has a good take on this
Finally, colorless cards, such as some artifacts, do not have any colored mana requirements but still require a general amount of mana to be spent to play
Well, in a recent Challenge event, one player made top eight with an off-the-wall decklist that was clearly skewed towards beating Thoughtseize strategies
![charizard pokemon card 3 70 #3 Dragon Majesty Holo GMA 10 Gem Mint Pokmon [Water]2 Charizard-Reverse Foil 2018 Pokemon TCG](https://i.ebayimg.com/images/g/qbwAAeSwGUBoLl3Z/s-l400.jpg)
Retreat: CCC Weakness: L Resistance: None ------------------------------------------------------------------------------ Goldeen A14 - Common Type: Water Evolution: Basic Pokemon Level: 12 HP: 40 W - Horn Attack (10) Retreat: None Weakness: L Resistance: None ------------------------------------------------------------------------------ Seaking A15 - Uncommon Type: Water Evolution: Stage 1 Evolution (Evolves from Goldeen) Level: 28 HP: 70 W - Horn Attack (10) WC - Waterfall (30) Retreat: C Weakness: L Resistance: None ------------------------------------------------------------------------------ Staryu A16 - Common Type: Water Evolution: Basic Pokemon Level: 15 HP: 40 W - Slap (20) Retreat: C Weakness: L Resistance: None ------------------------------------------------------------------------------ Magikarp A17 - Uncommon Type: Water Evolution: Basic Pokemon Level: 8 HP: 30 C - Tackle (10) W - Flail (10x) Effect: Does 10 damage times the number of damage counters on Magikarp
![charizard pokemon card 3 70 #3 Dragon Majesty Holo GMA 10 Gem Mint Pokmon [Water]2 Charizard-Reverse Foil 2018 Pokemon TCG](https://lookaside.instagram.com/seo/google_widget/crawler/?media_id=3849190902078770473)
Certain creatures would gain a bonus during Day while others would gain one during Night