2. Deck and Collection Editor

Deck editing

result	action
add / remove 1 card	`Drag-n-drop` the card to deck area (bottom area of the window) or click the card using `Right` / `Middle` mouse buttons
`drag` from main deck and `drop` to sideboard	`drag` the card to `sideboard` tab header
`drag-n-drop` cards between different open tabs	`drag` the card to a tab in window header
create a new tab while `draggig`	`dragging` card to `+` button in window header
add / remove 4 cards	`Ctrl` + `drag-n-drop` or `Ctrl` + `Right` / `Middle` mouse click
switch between main deck and sideboard	Use `main deck` / `sideboard` tabs

Collection editing

result	action
add / remove 1 card from collection	`Alt` + `Right` / `Middle` mouse click
add / remove 4 cards from collection	`Ctrl` + `Alt` + `Right` / `Middle` mouse click

Sample hand, Draw and Mulligan simulation

To see what your hand would be with current deck use sample hand tab. You will see the buttons

new hand shuffles the library and deals you 7 random cards
mulligan shuffles the library and deals you N-1 random cards where N is current hand size
draw adds 1 random card to your current hand

Deck editing commands such as adding / removing / reordering cards still work in sample hand tab. Combining card removal with middle mouse click with draw button you can simulate your hand content within the match.