As strong as these lands seem, they see significantly less play in older formats
Regular holofoil cards are usually rare pulls from booster packs and are highly sought after by collectors
In Limited, this could be a late-game finisher, but it requires a critical mass of Room cards to be truly effective
The issue faced by Spellskite is that it is basically just a slightly bigger Phyrexian Walker that does nothing aggressive on its own
If heads, this Pokemon will not be affected by damage or special effects of your opponent's Attacks during your opponent's next turn 10
There are no summoning real monsters from possessed cards, no card spirits over a player's shoulder, and sadly no "Heart of the Cards", it's just a trading card game