These two phases are referred to as the first and second Main Phase, or alternatively as the pre-combat and post-combat Main Phase, and respectively make up the second and fourth phases of a turn
Here's where you can see the best ways for new players to start to battle, including an easy view of product contents and the fun extras included in each
You can tap any untapped legendary creature you control, including one you haven't controlled continuously since the beginning of your most recent turn, to pay the cost of Relic of Legends's activated ability
Anything covered up in the augment process doesn't count, so ignore things to the left of the "metal bar" in the art of host creatures
Note that the Sengir Vampire ability triggers when a creature damaged by it goes to the graveyard
Previously it was a very binary system: A card was either banned or not