Contents and decklists are in the products section
The full texts of these abilities are "At the beginning of the monarch's end step, that player draws a card" and "Whenever a creature deals combat damage to the monarch, its controller becomes the monarch." If the triggered ability that causes the monarch to draw a card goes on the stack and a different player becomes the monarch before that ability resolves, the first player will still draw the card
For a Base Set card, Gyarados is pretty powerful with 100 HP, Dragon Rage (which does 50 points of damage) and Bubble Beam, which inflicts 40 points of damage and has the chance of Paralyzing the opponents Pokemon too
People have spent thousands of dollars trying to pull this rare card from a Booster Box Set, whilst others have managed to open just a couple of Boosters and gotten it
Denry Klin is a legendary creature with the ability to enter the battlefield with a counter that grants first strike, vigilance, or +1/+1
Mana Leak (7) and Memory Lapse (7) and even Unsubstantiate (7) are likely all better than Actual Counterspell (6.5) as colour intense spells are often pretty uncomfortable