Card marking is illegal in competitive play because it gives you an unfair advantage over your opponent
The 10 two-color combinations are: Azorius : Blue/White Boros : Red/White Dimir : Blue/Black Golgari : Black/Green Gruul : Red/Green Izzet : Blue/Red Orzhov : White/Black Rakdos : Red/Black Selesnya : White/Green Simic : Blue/Green Three-color combinations The 10 three-color combinations get their names from two different places
When a token leaves the battlefield, it simply stops existing
Comet comes into play with five loyalty and only has a single loyalty ability, which is worth zero loyalty
That gets way stronger with enchantments like Utopia Sprawl that allow your lands to tap for 1 or more mana or lands that innately tap for lots of mana, like Nykthos, Shrine to Nyx
Inti doesn't have any built-in resiliency to removal, but he does only cost 2 mana, which means you can reliably recast him a few times per game, which puts him roughly on par with the other resilient options in my opinion
