Well of Discovery

At the beginning of your end step, if you didn't play a land this turn, you may draw a card.

Spells you control can't be countered.

At the beginning of your end step, discover 5. (Exile cards from the top of your library until you exile a nonland card with mana value 5 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

At the beginning of your end step, if you control two or more other creatures, draw a card.

: Create a 1/1 colorless Soldier artifact creature token.

Unearth

, : Target creature you control gets +3/+3 until end of turn. Its controller sacrifices it at the beginning of the next end step.

, : Target creature you control gets +X/+X until end of turn. Destroy it at the beginning of the next end step.

Whenever a player casts a spell, they may pay . If the player does, they draw a card at the beginning of the next end step.